The new Volkswagen Jetta is an entirely new vehicle design. The appearance of its fully galvanised body shows this most emphatically. Never before was a VW Jetta this large, this sporty, this independent. Just how independent? One sign is that the Volkswagen Jetta no longer shares any body components with the technically related world’s bestseller, the Golf. Instead, the new Jetta impresses as an independent vehicle like the Passat CC or Tiguan. And it is just as safe; the previous model was already named “Top Safety Pick” in crash testing by the US organisation IIHS. Along with optimal occupant crash safety, the car has further advanced pedestrian safety features. With the Jetta, Volkswagen has once again introduced entirely new standards of quality to a vehicle segment.
Exterior styling and dimensions
The new model is 182.7 inches (4.63 metres) long, 57.1 inches (1.45 metres) tall and 70.1 inches (1.78 metres) wide (length of the European version: 4.64 metres). This makes the Volkswagen 3.15 inches (8 cm) longer than the previous model. The interplay of exterior dimensions produces a powerful ratio of proportions. In parallel, the new Volkswagen “design DNA” sharpens its style. This has resulted in clear precise lines and athletically muscular surfaces that give the saloon an image of timeless elegance and dynamic styling. The result: the Volkswagen Jetta’s appearance makes such a dominant styling statement that the Volkswagen practically positions itself in a higher vehicle class.
Front end: Here it is the coupe-like incline of the windshield and the consistent use of horizontal lines that define the design. The high-gloss black radiator grille forms a stylistic unit together with the trapezoidal headlights. The dual reflector headlights are sectioned by a so-called masking blade into a larger area with the low and main beam lights and a narrow lower section with daytime running lights and indicator lights. The chrome masking blades guide the horizontal lines of the front end right into the headlights. The result: the Volkswagen Jetta has a wider and more dynamic visual stance. In the area of the low-beam light, new H7 Longlife halogen discharge lamps are used which have a significantly longer service life. The parking and daytime running lights – generally subjected to more severe loads – are also designed with Longlife or Super-Longlife technology. Optimal tuning of the mounting height and size of the low-beam reflector produces very good and broad illumination of the roadway with an emphasis on the driver’s side.
Just beneath the grille and headlight unit is the cleanly sculpted surface of the fully painted bumper. One section lower, another cooling air intake and a tray-shaped front spoiler (in the style of ‘splitters’ used in car racing) give the car a sporty finish. The upper section of the front end displays a powerful transition from the v-shaped engine bonnet to the wings on the sides; the shoulder section here reflects dynamic and muscular styling.
Side profile: In the saloon’s side profile, design characteristics that mark all new Volkswagens meld into yet another interpretation of the “design DNA” conceptualised by the Italian Head of Design for the Volkswagen Group (Walter de Silva) and the German Head of Design for the Volkswagen Brand (Klaus Bischoff). The best examples of this: the characteristic shoulder or ‘tornado’ line and the powerfully emphasised arches of the wheel wells. Formally, they intersect the main volumes of the large harmonised surfaces, conveying a strong dynamic image.
Thanks to wide track dimensions (1,535 mm in front, 1,532 mm in rear), the wheelarches also form a precise transition – as though carved by a knife – to accommodate wheels up to 18 inches in size. Meanwhile, the styling of the door mirrors with their integrated indicator lights emulate those of the larger Passat CC. Another typical design characteristic is the line work in the area of the C-pillars. Here, the trailing edge of the door follows a straight line from the side sill diagonally back into the triangle window; stylistically, this lengthens the door and gives the overall vehicle an even larger, more extended and elegant appearance.
Rear section: Harmonised surfaces and sporty shoulders also dominate the look at the rear of the VW Jetta. The very wide and coupe-like rear window offers excellent visibility behind the saloon and simultaneously emphasises its dynamic lines. Its interplay with the C-pillars, as striking as they are elegant, and the clearly sculpted shoulder section, produces a design that is extremely dominant, generating a strong presence.
Powerfully illuminating and visually prominent: the rear lights. They are split into two sections, extending from the wing into the boot lid and displaying an unmistakable look both day and night. The boot lid itself has an aerodynamically optimised trailing edge that minimises air turbulence and increases the car’s downforce to the road. The vertical surface of the boot lid with its integrated VW logo and segmented rear lights shows a slight flare – a styling tool that further emphasises the saloon’s sportiness. To access the 510 litre boot, the boot lid can be opened by remote control unlock. Perfection in details: A special patented reflector geometry illuminates the entire lower license plate and boot area together.
The new Jetta is equipped with six airbags as standard equipment (driver and front passenger airbags, side airbags in front and side curtain airbags in front and rear). Customers can add optional rear side airbags to this package. To ensure that the airbags deploy to their proper positions faster than ever, the new Volkswagen Jetta has a special sensor system for detecting crash intensity and igniting the airbags. The electronics, located centrally in the passenger compartment, evaluates low-frequency “palpable” deceleration signals. In addition, specially tuned accelerometers measure frequency components in the mid or “audible” range. These signal components are generated as car body waves when load-bearing structures in the front of the car deform very quickly. They propagate throughout the vehicle structure at a high speed and make precise information on the severity of the crash available very quickly.
By intelligently interrelating the “palpable” and “audible” signal components, the airbag sensor system obtains a faster and simultaneously more reliable characterisation of the crash. This makes it possible to adapt the deployment performance of the airbags and belt tensioners to the crash situation in order to provide optimal protection for passengers. In Germany, the Volkswagen sensor system has been awarded the Bavarian Innovation Prize.
High-strength, form-hardened steels are also used in the new VW Jetta. These special steels help to create an extremely safe vehicle structure while avoiding spiralling weight gains. The impact energy is routed through defined load paths according to the crash type, to absorb a share of the energy that would otherwise impact on the car’s occupants.
Just like its exterior styling, the high-quality impression made by the interior bridges the gap to the next class up, significantly increasing the Volkswagen Jetta’s lead over the competition. Inside, the new Jetta offers an unparalleled perfection in details and – as a common conceptual thread – self-explanatory controls.
The silver framed round instruments designed in the style of the Passat CC are positioned for optimum viewing; the multifunction display (trip computer) is located between them. The new three-spoke steering wheel design (optionally with multifunction keys) impresses both visually and to the touch. The right hand rests ergonomically on the gearshift grip. Forward of the gear lever are the redesigned and intuitive controls for the climate control (standard from the US equipment line S plus S1-package, as well as on the Trendline in Germany) and other convenience features such as the optional heated seats as well as the radio and radio-navigation systems. This console section is slightly inclined towards the driver for an ideal cockpit layout that focuses on the driver’s needs. Also providing for optimal interior comfort is the air conditioning system that is standard from the S2 equipment version in the USA and from the Comfortline in Germany.
The parking brake lever was also repositioned, freeing up more space on the right side that is now used for larger cupholders. Numerous storage options – including an option-dependent centre armrest with large storage box and special sunglasses holder – all perfect the car’s practical everyday utility.
More space for driver and front passenger
Despite the low roof line, the effective headroom for driver and front passenger has remained nearly the same: It is now 970 mm. Both occupants take their places on completely redesigned and ergonomic seats that offer a high level of long-distance travel comfort and ample adjustments (optional 6-way and 8-way adjustment).
The extended wheelbase enabled a significantly more comfortable layout of the Volkswagen Jetta’s 3-person rear seating area. Compared to the previous model, it now offers 38.1 inches (96.7 cm) legroom – a gain of 2.6 inches (6.7 cm). Headroom in the rear, at 943 mm, is still at the same good level of the previous model.
510 litre cargo capacity
Even the base version sports a folding rear bench seatback with a 60/40 split, increasing the car’s versatility. The 510 litre boot can be opened from inside the car by a remote unlock switch (alternatives: unlocking from the exterior and by RF remote control, which is standard from the S2 equipment line for the USA and from the Trendline for Europe).
The new VW Jetta is equipped with six airbags as standard equipment (driver and front passenger airbags, side airbags in front and side curtain airbags in front and rear). Customers can add optional rear side airbags to this package (for detailed information on the topic of passive safety, see the Body section).
Standard and Optional Features
Volkswagen has systematically tailored its US equipment versions (S, SE, SEL, TDI and GLI) to address the wishes of American car drivers, and in doing so it has developed one of the most attractive saloons in its class. The already well-equipped base version will launch at prices from 15,995 US dollars. In Europe, the Volkswagen Jetta will once again be offered in the three equipment lines Trendline, Comfortline and Highline (prices for Europe will be announced when ordering begins in individual countries).
Standard features of the VW Jetta in America
S-Line (S1): Standard features of the base version Volkswagen Jetta include ESP and ABS, 6 airbags, 5 head restraints (with special whiplash protection in front), tyre pressure monitoring, outdoor temperature display, daytime running lights, pollen filter, electric windows all around, 3 cupholders, “Cardeol” pattern seats, height adjustable driver’s seat, 60/40 split rear seatback, radio prep with four loudspeakers, and body-coloured bumpers and door handles.
S2: The S-Line can be supplemented with the S2 package, which includes climate control, radio-CD system, RF remote control for central locking and pre-wiring for an alarm system.
SE line (SE1): Beyond the S1 and S2 features, the SE line also includes a 16-inch wheel-tyre combination instead of 15-inch, comfort seats in “Acerin” pattern, door mirrors in body colour with integrated indicator lights, larger tailpipes, radio prep with 6 loudspeakers, a chrome interior package (rotary light switch, bezels for the air nozzles, control knobs for the climate control system, parking brake lever grip and chrome badge on the steering wheel), centre armrests (front armrest has storage box and 2 cupholders, rear has 2 cupholders as well), cruise control, lockable and illuminated glovebox, reading lamps in the rear, illuminated make-up mirrors in the sun visors and floor mats.
SE2: Supplemental packages are provided here too. The SE2 includes a leather multifunction steering wheel, leather gearshift grip and leather parking brake, 16-inch alloy wheels (“Sedona” type), Sirius Satellite Radio system, Bluetooth, USB, AUX and iPod interfaces and heated seats and windshield washer nozzles.
SE3: Additional features of the SE3 package include a premium sound system with CD/MP3 player and a large tilt/slide sunroof.
SEL line (SEL1): The SEL equipment line is launching with even more exclusive features. Beyond the standard features of the SE3, this Jetta line – and this is just an excerpt – is also equipped with these exterior features: fog lamps, chrome accents on the radiator grille, chrome trim on the side window sills, machine-polished 17-inch alloy wheels (“Joda” type) and rear disc brakes instead of drum brakes. Additional convenience and comfort features on this Volkswagen Jetta are the Keyless Access automatic engine starting and locking system, RNS Low (US) radio-navigation system, 8-way driver’s seat adjustment, brushed chrome interior accents and a trip computer. The sunroof is not included with the SEL1 package.
SEL2: Those wishing to drive the top version VW Jetta with a sunroof will choose the SEL2 package. This version also includes a sport chassis, aluminium sport pedals and sporty styling of the door sills.
TDI line (TDI1): The Clean Diesel version of the new Jetta is automatically equipped with features through the SE2 level plus a trip computer, leather multifunction steering wheel, leather gearshift grip, leather parking brake lever, disc brakes all around and 16-inch “Mambo” alloy wheels.
TDI2: Features of the TDI version can be supplemented with the TDI2 package that includes a sunroof, fog lights, chrome radiator grille, chrome window sill trim, interior accents in metal look, Keyless Access engine starting and locking system, RNS Low radio-navigation system and 8-way driver’s seat adjustment.
GLI line (GLI1): The flagship of the new Volkswagen Jetta model series will follow in 2011 – the GLI with 147 kW / 200 PS. GLI upgrades beyond those of the SE1 level make up an almost endless list of exclusive details. This line includes 17-inch alloy wheels, multi-link rear suspension, sound generator (for a sporty engine sound), sport chassis (lowered by 15 millimetres), customised bumpers in sport design, red painted brake callipers, sport seats with custom GLI upholstery, red seat and leather seams (steering wheel, custom GLI gearshift grip and parking brake), brushed metal interior accents, aluminium pedals and door sills, as well as a Sirius satellite radio system.
GLI2/3: In the GLI2 version, the VW Jetta is also equipped with a sunroof, 18-inch alloy wheels, leather-like V-Tex seat covers and an exceptional sound system. The GLI3 level adds a radio-navigation system.
Standard Volkswagen Jetta features in Europe
Trendline: The Trendline continues to mark the entry into the world of the European Jetta. Similar to the USA versions, safety equipment includes 6 airbags (optional 8), 5 crash-optimised head restraints (with anti-whiplash system in front), daytime running lights, seatbelt detection, automatic hazard light activation during hard braking and ABS with brake assistant and ESP with trailer stabilisation.
Exterior details of the VW Jetta Trendline include 205 tires on 16-inch wheels, heated electric outside mirrors with integrated indicator lights, and green-tinted windows with insulating glass. Interior convenience and comfort features include such details as air conditioning, dust and pollen filter, RF remote control of central locking, outside temperature indicator with freeze warning, chrome bezels on the air vents, interchangeable interior accents, AUX-IN port, multifunction display, 6-way driver’s seat adjustment (including height adjustment) and 4-way front passenger seat adjustment (fabric seat covers in “Cardeol” pattern).
Comfortline: The mid-range Comfortline equipment version is marked by such features as chrome accents in the radiator grille and 16-inch, five-spoke “Mambo” alloy wheels. Inside, details upgrading the Volkswagen Jetta Comfortline include storage pockets on the front seatbacks, centre armrests (with storage box in front), 8-way adjustment of driver and front passenger seats, comfort seats with high-end “Sienna” pattern fabric covers, woven floor mats, RCD 210 radio-CD system, chrome package (including rotary light switch and control knobs for the climate control system) and what is referred to as the small leather package (steering wheel, gearshift grip and parking brake) as well a black decor accents (“Black Pyramid”). Also standard: the ParkPilot (front and rear), passenger door mirror lowering for backing up and four reading lights (2 in front, 2 in rear).
Highline: The Highline version offers the most exclusive VW Jetta features. In the exterior area, features beyond the Comfortline features are 17-inch alloy wheels (“Porto” type with ten spokes), a chrome frame for the lower air intake screen, chrome trim under the side windows, headlight cleaning system and front fog lights with cornering lights. The Winter package (with heated front seats and windshield washer nozzles) offers ideal convenience and comfort through the coldest season. Interior features distinguishing the Volkswagen Jetta Highline as a top model of the series include sport seats with fabric upholstery (“Gloss”) and artificial leather, especially high-end décor accents (“Iridium Printed” pattern), the small leather package (steering wheel, gearshift grip, parking brake), a high-gloss black insert in the centre console area and automatic climate control system (Climatronic).
In all three equipment versions, the seats and interior trims may be ordered in one of the basic colours “Titan Black,” “Latte Macchiato” or “Corn Silk.” On the Volkswagen Jetta Comfortline and Jetta Highline, Volkswagen offers an additional “Vienna” leather option in “Latte Macchiato” or “Corn Silk” colour.
The Keyless Access option is a locking and engine starting system that makes do without a door or ignition lock. When one of the front door handles is touched, the system detects access authorisation from a transponder in the person’s jacket, trousers or handbag, unlocks the VW Jetta (in this case including the electric steering column lock), releases the engine immobilizer and optional anti-theft warning system and enables an engine start by the engine Start/Stop button on the centre console. From the outside, the Volkswagen Jetta is locked by touching one of the door handles – on one of the surfaces specially marked for this purpose. As an alternative, the Volkswagen may of course also be locked or unlocked from the inside or by remote control.
Functional procedure: When the door handle is touched, this essentially wakes up the Volkswagen Jetta. The electronics utilises outside antennas (including one in each of the front door handles) to externally radiate an inductive field to scan for a valid ID transponder – a suitable sender – at a distance of up to 1.5 metres from the VW Jetta. If it finds one, the antenna routes the code emitted by the sender to the relevant control module. All of this happens faster than the blink of an eye. If the code is correct, the doors are unlocked. Three other antennas inside the vehicle can also localise a transponder or “key” here. In the passenger compartment, other antennas check whether the ID transponder is located inside the car. To protect children, for example, the car’s engine cannot be started if the ID transponder is outside the vehicle – even by just a few centimetres. So, if the transponder fob is placed on the roof, it would be impossible to climb in and drive off.
Radio-CD and Radio-Navigation systems
Either the RCD 210 (Europe) or a US-version radio system is included as standard equipment on the higher equipment lines. In Europe, the optional RCD 310 (with dual tuner and 8 loudspeakers) offers even more power and functions. The top audio system in Europe is the RCD 510; in America it is the Premium 8 model with integrated CD changer, interface for SD cards and touchscreen. As an option, the European RCD 310 and RCD 510 may also be supplemented by a DAB module for digital radio reception. All Volkswagen Jetta versions are available with an optional hands-free system (3 systems in Europe, 1 system in America) for mobile telephones.
SAT Radio: In the USA, Volkswagen offers the Jetta with SAT reception (Sirius) for radio-CD and navigation systems. Users will be able to choose from more than 200 radio stations, and the system offers the latest traffic reports for navigation. Additional information is also provided, e.g. weather, petrol prices, sport results, TV programming and flight information.
Sound system: In Europe, Volkswagen will offer a high-end sound system under the in-house label “Volkswagen Sound.” In terms of high-end options, many Jetta drivers will choose one of the following navigation systems.
RNS 315 for America and Europe: An attractively priced entry to radio-navigation systems is offered by the new RNS 315 with 5-inch touchscreen (400 x 240 pixels), CD player, SD card slot and dual tuner. The SD card interface can be used to save the navigation data (by copying it from the Navigations-CD) and MP3 files for music replay. The RNS 315 may also be supplemented with the DAB module.
RNS 510 for Europe: The top model among the radio-navigation systems is the RNS 510. It serves up such upgrades as a 6.5-inch touchscreen, DVD player, voice activation, an SD card slot and extremely fast 30 Gigabyte hard drive.
Drive Technology and Chassis
German Engineering is the key word that captures the attention of many customers in the USA. German engineering and craftsmanship stands for the highest level of quality and efficient technology, and not only in Germany. The new VW Jetta is a prime example; a look at its drive technologies makes this abundantly clear: as a turbodiesel, it sets standards with the latest common rail direct injection system. The US version equipped with a 103 kW / 140 PS TDI Clean Diesel (which fulfils the BIN 5 emissions standard) attains a top fuel economy of 42 mpg Highway (combined cycle: 34 mpg) – this makes the Volkswagen Jetta one of the most fuel-efficient vehicles on the roads between New York and San Francisco. In Europe, Volkswagen will be introducing a 77 kW / 105 PS engine as its smallest TDI at the beginning of 2011. Its fuel economy in the BlueMotion Technology version: a sensational 4.2 l/100 km – a best value for a saloon in the 4.6 metre class.
Volkswagen Jetta engines in America
In the USA and Canada, the new Volkswagen Jetta will be offered with three petrol engines and one direct injection turbodiesel (TDI Clean Diesel). Two of the four engines are new aboard the Volkswagen Jetta: The entry-level engine (85 kW / 115 PS) and the common rail TDI (103 kW / 140 PS). Technically perfected are the 125 kW / 170 PS 2.5 litre petrol engine and the sporty top engine – the charged 2.0 TSI with 147 kW / 200 PS, which in North America will drive the Jetta GLI top model starting in 2011. A technical highlight is the new 2.0 TDI Clean Diesel; thanks to the conversion to common rail direct injection – the world’s leading fuel delivery system – the turbo engine was made as quiet as a petrol engine and as powerful as a sports car engine (320 Newton metres maximum torque). A particulate filter and NOx storage catalytic converter guarantee that this TDI also meets emissions requirements for all 50 states of the USA. Its 42 mpg Highway fuel economy (with DSG) makes the new and very agile Volkswagen Jetta 2.0 TDI (0-60 mph in 8.7 seconds) one of the most fuel-efficient and lowest emitting vehicles on the American continent.
All engines are offered with a standard manual gearbox. Of course, an optional automatic gearbox is available for each model. On the new 2.0 TDI and 2.0 TSI, Volkswagen is implementing one of the most advanced and efficient automatic transmission systems in the world – the 6-speed DSG.
2.0 MPI with 85 kW / 115 PS: The smallest engine (1,981 cm3) in the VW Jetta has a crossflow cylinder head made of an aluminium alloy. The comfortable four-cylinder engine (85 kW / 115 PS) reaches its maximum power at 5,200 rpm, and its maximum torque (170 Newton metres) at 4,000 rpm. With a manual gearbox, the multipoint four cylinder engine accelerates the saloon to 60 mph in 10.3 seconds; the car’s top speed is 120 mph. With a 6-speed automatic, the Jetta 2.0 accelerates to 60 mph in 11.3 seconds (top speed is identical). The 115 PS engine attains 34 mpg fuel economy (manual gearbox) in the Highway cycle; the automatic version comes in at 32 mpg.
2.5 MPI with 125 kW / 170 PS: Specially developed for the American market is the torque-strong five-cylinder engine with a power of 125 kW / 170 PS (at 5,600 rpm) and 2,480 cm3 displacement. Conceptually, the very successful engine (66 percent engine share in the Jetta) was derived from the V10 engine of the Lamborghini Gallardo. And its DNA is definitely noticeable in the new VW Jetta too: The 16-valve five-cylinder engine equipped with multipoint injection goes to work with great responsiveness over the entire speed range, and it accelerates the Volkswagen to 60 mph in just 8.0 seconds; if the 6-speed automatic is aboard, the value is 8.5 seconds. Acoustically, the five cylinder always remains in the background, even at its top speed of 125 mph. The maximum torque of the Volkswagen Jetta engine with multipoint injection is reached at 4,250 rpm and amounts to 240 Newton metres. For the first time, the 2.5 litre five cylinder is now equipped with a regulated oil pump, which further reduces fuel consumption. In the Highway cycle, fuel economy of the automatic gearbox version is 31 mpg, and it is 33 mpg for the manual version.
2.0 TSI with 147 kW / 200 PS: At the highest performance level, the new Jetta as a GLI version is driven by a 147 kW / 200 PS (5,100 to 6,000 rpm) TSI. Thanks to turbocharging and petrol direct injection, the 1,984 cm3 four cylinder TSI offers plenty of power with little fuel: 280 Newton metres (between 1,700 and 5,000 rpm) and a top speed of 130 mph contrast with 33 mpg fuel economy in the Highway cycle (6-speed gearbox); the Volkswagen Jetta GLI equipped with optional 6-speed DSG comes in at 32 mpg. Incidentally, the saloon handles the sprint to 60 mph in a short 6.7 seconds (DSG: 6.8 seconds).
2.0 TDI with 103 kW / 140 PS: Ideally tailored to the VW Jetta, and to the long driving distances covered in the USA, is the new common rail turbodiesel with 1,968 cm3 displacement. The four cylinder develops a power of 103 kW / 140 PS (at 4,000 rpm). Between 1,750 and 2,500 rpm, the remarkably quiet TDI develops a maximum torque of 320 Newton metres. Thanks to these key performance figures, the Clean Diesel accelerates the Volkswagen Jetta TDI to 60 mph in just 9.1 seconds (6-speed manual: 8.7 seconds). Its top speed is 125 mph. Refuelling becomes an afterthought with this car that attains 41 mpg (Highway); the DSG version even betters this at 42 mpg.
Common rail injection of the TDI in detail: Injection pressures of up to 1,800 bar and special eight-hole injection nozzles ensure especially fine atomisation of the diesel fuel. Piezo in-line injectors are responsible for operating the injection nozzles. In this process, electrically controlled piezo crystals initiate injection in fractions of a second with the support of a hydraulic element. Compared to conventional solenoid valves, piezo technology enables more flexible injection processes with smaller, more precisely measurable fuel quantities and multiple injections with up to 7 individual injections per work cycle. The advantages: very quiet and smooth engine running, spontaneous response behaviour and low fuel consumption and emissions.
Clean Diesel technology in detail: The new Jetta’s Clean Diesel is one of the most fuel-efficient and lowest emitting engines offered in America. Naturally, the TDI satisfies the strict emission limits of BIN5/ULEV2 emissions standards legislated in the USA, and so it can be registered in all 50 states of the USA. A key aspect of Clean Diesel technical design is how it reduces nitrogen oxide emissions. In the four cylinder common rail TDI, engineers in Wolfsburg achieved this goal by making internal engine modifications and implementing a NOx storage catalytic converter. This technology reduces nitrogen oxide (NOx) emissions by up to 90 percent.
Why a NOx storage catalytic converter is used is easy to explain: high combustion chamber temperatures improve fuel economy – but at the same time they generate more nitrogen oxides. Within certain limits, the nitrogen oxides can be reduced by optimising combustion chamber geometries and implementing extremely precise injection processes, as Volkswagen has proven. Nonetheless, when considering emissions it is necessary to limit combustion temperatures and the concentration of oxygen, which reacts with the nitrogen to form nitrogen oxides. Both goals can be attained by external recirculation of exhaust gas into the combustion chamber. This gas is taken from the exhaust system and cooled on the way to the combustion chamber. In the ideal case, these measures can reduce temperature-dependent nitrogen oxide emissions by up to 60 percent.
The NOx storage catalytic converter handles the rest. It soaks up nitrogen oxides very efficiently, like a sponge. Like a particulate filter, it is cleaned at regular intervals without the driver even noticing. The engine management system does this by operating the engine in a mode with a richer combustion mixture for a few seconds. The NOx storage catalytic converter requires diesel fuel that has extremely low sulphur content (sulphur content below 15 parts per million, or 15 ppm); otherwise sulphate formation would make it less efficient. In the USA, this type of diesel fuel has been widely available since autumn 2008.
Volkswagen Jetta engines in Europe
In Europe, engine strategy will be based on conditions prevailing there. Smaller displacements and charging are crucial for all engines. This means somewhat lower power in the base engines, significantly smaller engine displacements on some engines, and all engines charged. Four of the six engines are new to the VW Jetta line-up: the 1.2 TSI (77 kW / 105 PS), the 1.4 TSI (118 kW / 160 PS) and the two common rail turbodiesels 1.6 TDI (77 kW / 105 PS) and 2.0 TDI (103 kW / 140 PS). Offering high-tech in proven form are the usual 1.4 TSI (90 kW / 122 PS) and 2.0 TSI (147 kW / 200 PS). Except for the 1.2 TSI, all other engines may be paired with an optional 6-speed DSG (77 kW TDI, 103 kW TDI, 147 kW TSI) or 7-speed DSG (90 kW TSI, 118 kW TSI).
Of course, every Jetta engine offered in Europe complies with the EU-5 emissions standard. The 1.2 TSI and 1.6 TDI are also available with a BlueMotion Technology package. Its technical features include a Start-Stop system and recovery of kinetic energy by battery regeneration. The new Volkswagen Jetta 1.2 TSI with BlueMotion Technology consumes just 5.3 l/100 km (equivalent to 123 g/km CO2) – an absolute top value for a petrol-powered saloon that can reach speeds of up to 190 km/h. The 1.6 TDI with BlueMotion Technology has a sensationally low combined fuel consumption of 4.2 l/100 km (109 g/km CO2); the VW Jetta with this engine is one of the most fuel-efficient 4.6 metre saloons in the world.
Petrol direct injection from 105 PS to 200 PS
Technically speaking, petrol direct injection, engine charging and reduced displacement are some of the most efficient ways to significantly reduce fuel consumption while significantly improving a vehicle’s dynamic properties. That is why Volkswagen is taking exactly this approach in its TSI engines: Reducing engine displacement, which in turn lowers friction and charge changing losses, resulting in lower specific fuel consumption and better engine efficiency. Engine charging takes the form of either a combination of turbocharger and supercharger or a specially developed turbocharger.
1.2 TSI with 77 kW / 105 PS: This turbocharged 1.2 litre four cylinder engine is the latest TSI in the program; like all engines of this type, it too follows the TSI downsizing philosophy with its 1,197 cm3 displacement. And this means maximum power with minimal fuel consumption. This Volkswagen Jetta is offered with an optional BlueMotion Technology package (with such features as a Start-Stop system and battery regeneration). From a standstill, even the BlueMotion Technology version of the 77 kW / 105 PS Jetta 1.2 TSI reaches 100 km/h after a short 10.9 seconds. Its top speed is 190 km/h. This contrasts with benchmark-setting fuel consumption and emission values: 5.3 l/100 km and 123 g/km CO2. The 1.2 TSI reaches its maximum power at 5,000 rpm. Its maximum torque of 175 Newton metres is available between 1,500 and 4,100 rpm. The VW Jetta 1.2 TSI is paired with a 6-speed manual gearbox as standard equipment.
1.4 TSI with 90 kW / 122 PS: In the mid-range of engine power, the new saloon is powered by an efficiently operating 1.4 litre TSI with 90 kW / 122 PS (at 5,000 rpm). With a combined fuel consumption of 6.2 litres Super unleaded per 100 kilometres, the turbo engine makes the manually shifted Volkswagen Jetta one of the most fuel-efficient cars of its performance class (144 g/km CO2). The 122 PS TSI takes the car to a top speed of 202 km/h. The saloon handles the classic 0-100-km/h sprint in 9.9 seconds. In the VW Jetta, the four cylinder engine reaches its maximum torque of 200 Newton metres between 1,500 and 4,000 rpm. This Volkswagen Jetta version may also be ordered with a 7-speed DSG gearbox.
1.4 TSI with 118 kW / 160 PS: This twincharged engine, i.e. both turbocharged and supercharged, with 118 kW / 160 PS (at 5,800 rpm) is exceptionally economical (combined fuel consumption with manual gearbox: 6.3 l/100 km), low emitting (147 g/km CO2) and torque strong (maximum of 240 Newton metres between 1,500 and 4,500 rpm). With this engine and a manual gearbox, the Volkswagen Jetta sprints to 100 km/h in 8.3 seconds; its top speed is 221 km/h. As an option, this engine may be ordered together with the 7-speed DSG.
Especially interesting is the complementary interaction of supercharger and turbocharger. The supercharger, mechanically driven by a belt, increases the TSI’s torque at low engine speeds. This is a charging unit based on the Roots Principle. A special aspect of this supercharger is its internal gearing, which enables high supercharger performance even at low engine speeds.
At higher engine speeds, the exhaust gas-driven turbocharger (with wastegate control) kicks in. Then the supercharger and turbocharger work in series. The supercharger is operated via a solenoid clutch that is integrated in a module within the water pump. A control gate ensures that the flow of fresh air required for the operating point reaches the turbocharger or supercharger. In pure turbocharger mode the control gate is open. Then the air takes the familiar path of conventional turbocharged engines via the front intercooler and throttle valve and into the induction pipe. Starting at an engine speed of 3,500 rpm the supercharger turns all of the work over to the turbocharger.
2.0 TSI with 147 kW / 200 PS: In Europe as well, the VW Jetta with the highest power output is a TSI produces 147 kW / 200 PS (at 6,000 rpm). This turbocharged 2.0 litre engine is legendary; it is used in such vehicles as the Golf GTI (although on that car it has an extra 10 PS). In the new Jetta, the large four-cylinder TSI also delivers impressive driving performance with excellent fuel economy. Over 100 kilometres, it consumes just 6.9 litres of fuel (equivalent to 160 g/km CO2), which it directly injects into the four cylinder engine that can output up to 280 Newton metres of torque (from 1,800 rpm). Meanwhile, the engine enables a top speed of 236 km/h. The Volkswagen Jetta 2.0 TSI completes the sprint to 100 km/h in 7.5 seconds. Tuned to this engine’s high torque is the 6-speed DSG that is available as an option in this VW Jetta.
Direct injection turbodiesels at 105 PS and 140 PS
1.6 TDI with 77 kW / 105 PS: The entry-level engine of the common rail TDI line-up for the Volkswagen Jetta in Europe is a 1.6 litre four cylinder with 77 kW / 105 PS (4,400 rpm) and a maximum torque of 250 Newton metres (1,500 to 2,500 rpm). Its combined fuel consumption (4.5 litres) represents a savings of 0.7 l/100 km compared to the previous model with unit injector technology. Upon request, this TDI can be ordered with a 7-speed DSG or in a BlueMotion Technology version (5-speed manual, optional 7-speed DSG). Equipped with BlueMotion Technology, fuel consumption is reduced to 4.2 l/100 km (109 g/km CO2). Both engine versions enable impressive driving performance. Consider the VW Jetta 1.6 TDI with BlueMotion Technology: After just 11.7 seconds, the saloon reaches the 100 km/h mark from a stop; its top speed: 190 km/h.
The technology of the 1,598 cm3 four cylinder reflects the highest standard on the market in this vehicle segment. The diesel fuel is directly injected via a common rail system into the combustion chamber at a pressure of 1,600 bar; special piezo actuators control the multiple injections and fuel volumes with extreme precision.
2.0 TDI with 103 kW / 140 PS: The strongest common rail TDI in the Volkswagen Jetta line-up is a 1,968 cm3 16-valve four cylinder with 103 kW / 140 PS (at 4,200 rpm). At a low 1,750 rpm, the remarkably quiet TDI develops a maximum torque of 320 Newton metres (up to 2,500 rpm). Thanks to these key performance parameters, the TDI accelerates the manually shifted VW Jetta to 100 km/h in just 9.5 seconds. Its top speed is 210 km/h. Here too, combined fuel consumption is extremely low at 4.8 l/100 km; the same applies to its CO2 emissions of 126 g/km.
The European VW Jetta can be delivered as an optional TDI or TSI BlueMotion Technology version with the 77 kW / 105 PS power output. Among other things, this efficient technology package includes low rolling resistance tires, the Start-Stop system and battery regeneration.
Start-Stop system: The driver approaches a red light, brakes the Volkswagen Jetta to a stop, shifts into neutral and takes the foot off the clutch (with DSG it is sufficient press the brake pedal). This causes the engine to shut off momentarily. In the multifunction display the text “Start Stop” appears. As soon as the light turns green again, the driver depresses the clutch (or with DSG simply releases the brake), and the engine starts, the “Start Stop” text is cleared, the driver engages a gear and resumes driving. Essentially, the driver does not need to perform any extra operating steps compared to a conventional car, yet saves up to 0.2 litres per 100 kilometres in the city using the Start-Stop system.
Unlike vehicles without the Start-Stop system, the BlueMotion Technology models have an extra battery data module (for acquiring momentary battery charge status), a reinforced engine starter, a DC/DC converter (guarantees voltage stability of the vehicle’s electrical system) and an exceptionally durable deep-cycle glass mat battery on board.
Battery regeneration: Regeneration helps to utilise the energy expended in driving as efficiently as possible. During coasting and braking phases of the VW Jetta – i.e. whenever the driver releases the accelerator pedal or brakes – the system elevates the voltage of the alternator (generator), and this electricity is used to bulk charge the vehicle’s battery.
Thanks to this alternator control as a function of engine efficiency, and the optimally charged battery that results, the voltage of the alternator can be reduced whenever this is desirable – e.g. when accelerating or while constantly maintaining a desired speed. The alternator may even be shut off entirely. This relieves engine load, which in turn reduces fuel consumption. In addition, the battery, which is continually fully charged, supplies the vehicle’s electrical system with sufficient energy during the stopped phase of the engine (e.g. at traffic lights). Battery regeneration requires special software for energy management and modified engine controller software.
Gearboxes with 5, 6 and 7 speeds
As an alternative to the 5 and 6-speed manual gearboxes and the further developed 6-speed automatic (exclusively in America), the new Volkswagen Jetta will also be offered with either a 6-speed or 7-speed dual clutch gearboxes (DSG), depending on the engine. Both DSG versions are characterised by maximum economy and shifting dynamics, which has never been attained to this extent before. Besides having different numbers of forward gears, another way in which the DSG systems differ technically is in their clutch types. While two dry clutches are used in the 7-speed DSG, the dual clutch of the 6-speed DSG runs wet in an oil bath. True of both gearboxes: even the most experienced professional drivers cannot come close to the shifting speeds of the DSG versions. Another fact: more than any other automatic, the dual clutch gearboxes have the potential to reduce fuel consumption and thereby emissions. Compared to a manual transmission, gains may be as much as 12 percent, depending on the engine, and even 20 percent compared to an automatic with torque-converter clutch. The two DSG versions are application-specific specialists. While the 6-speed DSG shines when paired with torque-strong engines (up to 350 Newton metres), the 7-speed DSG is especially effective in combination with smaller engines with lower torque outputs (up to 250 Newton metres).
Running gear of the new VW Jetta
In its driving properties, the new Jetta is also one of the safest automobiles in the world. All VW Jetta versions worldwide are equipped with the latest generation ESP (electronic stabilisation program) as a standard feature. Running gear tuning is as safe as it is comfortable and dynamic. A MacPherson strut-type front suspension with coil springs and telescoping shock absorbers is used in the Jetta. At the rear, a multi-link suspension is at work in the American Jetta GLI (debuting in 2011 with 15 millimetre lower sport chassis) and in European versions; all other US versions are equipped with a torsion-beam rear suspension specially tuned for the American market.
This new suspension for the USA offers very good vertical damping comfort; that is, it has a soft response and is therefore ideally tailored for American roads. Nonetheless, the essentially European and therefore dynamic basic tuning is still clearly discernible. The high transverse rigidity and lateral rigidity of the rear suspension make the car very directionally stable. Moreover, the suspension also offers excellent driving stability when the car is fully loaded. Fitting into this picture is the Volkswagen Jetta’s smooth yet precise electro-mechanical power steering.