BEST SELLING AUDI SEDAN – THE AUDI A4 – REDESIGNED IN 2005

–         Powerhouse S4 Also Redesigned –

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AUBURN HILLS, Mich. – Audi of America, Inc. is presenting the new generation of its best-selling models – the A4 and S4 sedan and Avant for the first time in North America at the Los Angeles and Detroit auto shows. The new A4 represents a higher dynamic level of driving pleasure, superior technology, exciting styling and a level of luxury that even satisfies the demands made in the premium sports class.

The 2005 A4 and its performance sibling, the S4, represent Audis new model generation in the premium midsize segment that is obvious at first glance. The front-end styling of both sedan and Avant models is new, with the addition of the characteristic Audi single-frame grille. The rear end, with its emphatically horizontal lines, and the sides, where the shoulder line accentuates the panels in an emphatically sporty manner, are new.

2006 A4 Sedan

The vehicles’ technology lives up to the promise made by its new exterior styling.  Innovative and highly sophisticated technologies are an integral part of practically all vehicle areas and components: the optional xenon plus headlights with pivoting dynamic adaptive light technology, continuously variable multitronic® transmission, quattro® allwheel drive and the revolutionary FSI (Fuel Straight Injection) engine technology.  The A4 sedan and Avant will arrive at Audi dealerships in early April in both the United States and Canada. The S4 will be available around the same time.

Drivetrain

Two performance-oriented engines are available in the new A4 sedan and Avant.  The 3.2 V6 FSI, which made its production debut in the new Audi A6 in November, has all the features of an ultramodern engine: FSI gasoline direct injection with demand controlled fuel supply, a variable intake manifold and continuous camshaft adjustment on both the intake and the exhaust side.

This V6 engine delivers 255 horsepower at 6,500 revolutions per minute. Its peak torque of 243 lbs. ft. is available at 3,250 rpm. More than 90 percent of the engine's peak torque is available in the wide range between 1,900 and 5,900 rpm – a unique characteristic for a naturally aspirated V6. The A4 3.2 FSI is available with a six-speed automatic transmission with Tiptronic ® and quattro all-wheel drive, and the sedan accelerates from 0 to 60 mph in 6.6 seconds (Avant is 6.8 seconds) and on up to a governed top speed of 130 mph.

FSI engines develop more power than conventional units with indirect fuel injection – and they do so with a very high standard of fuel economy. With the increase in efficiency achieved here, Audi has opened up a new dimension in the efficiency of standard spark-ignition engines and once again demonstrated the proverbial progress through technology familiar to the brand.  FSI direct gas injection has confirmed its unique potential several times over in what must be the most challenging endurance test in the world: an engine with FSI direct injection powers the Le Mans-winning Audi R8.

How does the FSI technology differ operationally from a conventional engine?  The term "fuel direct injection" makes the central feature clear: in contrast to indirect injection, the fuel is injected directly into the combustion chamber.  A common rail high-pressure injection system with a newly developed single piston high-pressure pump operating on demand ensures exactly the right supply of fuel, delivering precisely the volume required for building up operating pressure between 30 and 110 bar. In the intake tract, also comprising the two-stage variable intake manifold, moving charge-movement flaps provide the necessary tumble effect, swirling the induced air around depending on operating point. In order to achieve the high specific power and torque values, a new combustion process has been developed. Together with the optimum geometry of the combustion chambers and the dosage of fuel injected with supreme accuracy down to the last millisecond, this allows a significant increase in compression.

2006 A4 Sedan

The 2.0 T FSI, an entirely newly developed engine, also is making its first appearance in the new Audi A4 sedan and Avant. This is the first time that turbocharging has been combined with the FSI concept of petrol direct injection.  The 2.0 T produces 200 hp from 5,100 to 6,000 rpm. The maximum torque of 207 lbs. ft. is available from just 1,800 all the way up to 5,000 rpm. This exceptionally broad torque plateau on the one hand permits a fuel-efficient driving style with few gearshifts, and on the other hand means that only light accelerator action is needed to produce assertive thrust and a spontaneous unleashing of power.  Several transmissions are combined with the new A4 2.0 T FSI. In the A4 sedan there are two front-wheel drive options: six-speed manual and a continuously variable multitronic transmission; and two quattro versions with either a six-speed manual gearbox or automatic transmission with Tiptronic. The A4 2.0 T Avant is available in only quattro all-wheel drive and the six-speed manual or six-speed automatic with Tiptronic.

In the 2.0 T FSI the fuel is injected via a common rail system supplied by a demand-controlled high-pressure pump. The fuel is injected directly into the combustion chamber via an injector positioned at one side between the inlet valves.

The four-valve cylinder head with low-friction roller cam follower drive has a modified inlet duct geometry that produces even higher tumble values than the naturally aspirated FSI engine. This results not only in greater refinement, but also in superior knock resistance and therefore efficiency.

Both the 3.2 and 2.0 T engines are longitudinally installed and qualify with the ULEV emissions standard, regardless of transmission version.  The 2005 S4’s 4.2 V8 engine produces 340 hp at 7,000 rpm and a mighty peak torque of 302 lbs. ft. at 3,500 rpm. In acceleration tests, the S4 sedan rips from 0-60 miles per hour in just 5.3 seconds with a six-speed manual transmission and a specially tuned exhaust that announces the evidence of its power.

Audi Design

Unmistakeably Audi: the new generation of the A4/S4 sedan and Avant once again exhibit the brand’s typical design features. Their sports character is immediately visible at first glance.  The ratio of the large, clearly shaped body surfaces to the flat, equally bold strip formed by the windows is significant. The discreetly rising shoulder line accentuates a powerful, dynamic stature, even when the car is stationary. Clear proportions, the gentle curve of the roof, the striking, visibly flared wheel arches: even its silhouette immediately identifies the new A4 as a genuine Audi.  The new A4 and S4 have grown slightly compared with its predecessor: the sedan is 38 millimeters longer, the Avant 41mm. The front end with its more substantial single-frame grille and new bumpers accounts for 12 mm of this additional length, the rear end for 28 or 31mm.

The new design elements, however, are even more eye-catching, especially at the front end: the striking single-frame grille and the newly styled clear-glass headlights with their sweeping bottom edge and inward taper give the new Audi A4 and S4 a completely new face.

The bumpers, which are fully painted in the body color at both front and rear, are also a new design. Thanks to their greater bulge and the fact that they reach a long way down, they accentuate the new model’s low center of gravity, seemingly bringing the car closer to the road.

The front-end styling deliberately echoes design elements of the Audi Nuvolari quattro concept car, thus emphasizing that this model also belongs to the same family as the other new Audi models – the A8 6.0 quattro, A6 and A3: a new Audi generation.  A clearly crafted horizontal light-refracting edge gives the bumpers additional shape. No less eye-catching at the rear end are the exhaust tailpipes which are now slightly larger from the previous generation – a clear indication of just what the new A4 models’ engines are capable of.

All S4 models have sporty accents that hint at their power and performance.  Vibrant exterior colors with contrasting titanium-colored inner housings, and distinctive S4 exterior mirror housings add a sporting look. S4 nomenclature on the trunk lid, a trunk-mounted rear spoiler (sedan) and aluminum roof rails on the S4 Avant, new dual exhaust pipes add finishing touches to the exterior of the S4.

The Interior

2006 S4 Sedan

The perfect tailor-made suit: a metaphor frequently used to describe vehicle interiors. But this image will come to the mind of anyone getting behind the characteristic wheel of the new Audi A4, with its hallmark feature of the single-frame element at the center. This, after all, is a car that unites two apparent opposites to produce an amazing synthesis of exceptional ergonomics and subjective comfort.  On the other hand, the new A4's cockpit is characterized by lines extending a long way into the door trim and center console areas, which quite literally appear to embrace the driver. This "wrap around" effect, to use the designers' technical term, is accentuated additionally by the A4's high waistline. This feature is something that many customers value very highly, not least because of the remarkable sense of security that it imparts.

The architecture of the dashboard and center console also provide scope for positioning a wide range of instruments and controls high up, in other words ideally within the driver's field of vision. This is an ergonomic strategy that is adopted in every aircraft cockpit for very good reasons.

The lines of the driving area create a lively interplay of distinctly rounded, tangible shapes and graphically clear edges and notches.  This area is thus divided up into clearly defined zones. These can be distinguished at a glance – a worthwhile ergonomic bonus that speeds up intuitive access to the individual information units and function groups. This process of locating involves both the visual and tactile senses: groups of controls and displays can also be identified by the materials used.

The most important controls for the occupants' well-being are located in the center console: dual automatic climate control, audio system, and the optional navigation system plus.  Available only in the United States and Canada is a specially designed center console with dual cupholders with size adjustable tabs and an extra 12-volt power outlet.  There is more room than average for luggage in the A4 sedan with a capacity of 13.4 cu. ft. The smooth-floored luggage compartment is well-equipped for tackling challenging transport tasks. And with a large distance between the wheel arches, there is plenty of room even for bulky loads.  The A4/S4 Avant’s load area combines an exclusive atmosphere with optimum utility and variability. This synthesis of successful interior design and multifunction sets new standards.

By design, the A4/S4 Avant’s load area offers a full range of ingenious details such as a net for small items, chrome-plated load-securing lugs, a storage compartment behind a cover in the left side panel, an easily accessible 12V power socket in the side panel and an active light in the tailgate that also illuminates the area behind the vehicle.

The body

The body of the new Audi A4 is based on a unitary steel structure with integrated aluminium components. The percentage by weight accounted for by plastics and the use of the lightweight materials aluminium and magnesium is considerable.

2006 A4 Sedan

A further decisive measure with a low vehicle weight in mind is the expansive use of high-strength and very high-strength sheet-metal panels, which make up a total of 45 percent of the bodyshell weight. These special sheet panels are used primarily in the front end of the new A4, where the main priority is to absorb impact energy as effectively as possible in a frontal crash.

As a protective cage, the occupant cell must also make sure that deformations and intrusions are minimized in a crash. Part of this task is performed by three large tailored blanks incorporated into the floor area. The wall thickness of each of these blanks varies.  They are joined together by laser weld seams.

The Dynamic Chassis

In the new A4 sedan and Avant, dynamics and comfort, easy handling and active safety are at the very highest level. Agility and ride comfort are equally impressive.  This road behavior is the result of extensive modifications in the area of elastokinematics as well as to the spring and shock absorber settings.  The predecessor’s tried-and-test basic geometry has been adopted at both front and rear: four-link front suspension and the highly complex self-tracking trapezoidal-link rear suspension. Both consist primarily of light-alloy components resulting in a low unsprung mass.

On the four-link front suspension layout, each wheel is located by four aluminum control arms. Large-volume rubber components are used as the damper mounts on the new suspension design. This helps to effectively isolate the shock absorbers acoustically.  Several mounts as well as the considerably stiffer track rods on the front suspension have been adopted from the high-performance S4. The mounts for the control arm originate from the new Audi A6.

Together with the new shock absorber settings, the suspension results in a particularly sensitive response to steering movements and even more precise feedback from the road.  In other words, extremely dynamic behavior which is isolated almost completely from front-wheel-drive influences.  The trapezoidal-link rear suspension makes for top-quality ride comfort on all models, coupled with dynamic behavior that will amaze the driver of many a competing model.

2006 A4 Avant

The trapezoidal link is made from hollow-section aluminium. This torsionally and flexurally rigid control arm absorbs a large portion of the forces acting on the wheel. Together with the track rod located behind it, it thus determines the elastokinematic behavior of the axle.  This design is notable for its low weight as well as its outstanding space efficiency. The compact design permits a low load-area floor in all versions, coupled with a generous load-area width.

The trapezoidal links and wheel carriers on the new A4 generation now also originate from the S4, a car whose suspension has demonstrated its all-round superiority in numerous individual and comparative tests conducted by the trade press. However, several mounts and the shock absorbers, which are considerably larger than on the previous model, have been adopted again from the A6.

Thanks to the precision work that has gone into modifying the rear suspension setup, the dynamic qualities of this basic structure are demonstrated even more effectively.   This all adds up to agility and excellent directional stability, outstanding straight-line running and a high level of comfort without any disturbing movements of the body.

The S4 has a sport suspension including stiffer shocks and springs, stronger stabilizer bars in the front and rear, and a ride height lowered by 30 mm compared to the Audi A4. The aluminum-intensive design yields low unsprung mass, which nets a sophisticated maximum ride comfort for driver and passengers, while still providing sports car like handling ability.

All versions of the Audi A4/S4 have disc brakes at the front and rear; the front discs are ventilated. Their dimensions have been adapted to the increased performance potential of the new generation of engines. Excellent controllability, spontaneous response and above all considerably reduced braking distances are the result.

The all-new Audi A4/S4 sedan and Avant come standard with hydraulic rack-and pinion steering featuring speed-dependent power assistance, Servotronic®.

The development goal here was to provide the highest conceivable standard of sporty steering precision and improved steering comfort.  The refined Servotronic system enables the driver to maneuver into parking spaces with a minimum of steering effort and maximum accuracy, and also provides a clear response from the road at higher speeds. The system also offers a high level of sensitivity around the straight-ahead position and even more comfortable initial response behavior.

2006 A4

All-new Audi A4/S4 models come with the latest Electronic Stabilization Program, ESP®. This system comprises ABS brakes with Electronic Brake-pressure Distribution (EBD) and hydraulic brake assist which automatically increases brake power when the driver applies the brakes in an emergency. The traction control system (ASR) interacts with the electronic differential lock (EDL) to provide efficient yaw control as the foundation for enhanced ESP safety.

The system has been developed to an even higher standard in terms of both electronics and hydraulics. New pressure control ensures even more precise intervention of the ESP stability functions in accordance with the given situation, particularly when the car is understeering. In the event of excessive understeer, all four wheels apply brake pressure if necessary so that the vehicle can be returned to its original course.  Yet another new feature is the brake disc wiping function integrated into ESP.  This new function helps to keep the brake discs largely dry on wet roads even when the driver does not apply the brakes for a relatively long time.

To provide this effect, the brake linings are pressed against the discs under low hydraulic pressure at regular intervals, ensuring even more spontaneous brake response under wet conditions, too. This process goes unnoticed by the driver.

Safety

The new Audi A4 remains faithful to the manufacturer's best tradition of safety.  After all, its predecessor was one of the very best in its class in this respect. A rigid body structure and meticulously calculated deformation properties, in conjunction with ultramodern restraint systems – such as the new two-stage front airbags – and outstanding technical concepts such as the Sideguard™ head-level airbag system, created an outstanding level of occupant safety.

In the event of a collision, the car's occupants are effectively protected by the robust structure of the body with predefined deformation and a highly stable passenger cell. The structure also has been improved regarding side crash impact. And in conjunction with seat belt tensioners and belt-force limiters, the full-size front airbags, front side airbags and the Sideguard head airbag system offer the driver and passengers a high level of protection.

The two full-size front airbags are activated in two stages, depending on the severity of the accident. Active front head restraints fitted as standard help to protect the occupants against whiplash injuries in a collision from behind.

Active safety benefits from the latest-generation ESP complete with hydraulic brake assist, anti-lock brake system (ABS), electronic brake-pressure distribution EBD, the traction control system ASR and the electronic differential lock EDL.  A new addition to the list of standard safety equipment is active head restraints on the front seats, which increase protection in a rear impact most effectively. A seat belt reminder system is also part of the standard specification on all new Audi A4 models.

2006 A4

In addition to the large-area front airbags, the occupants are protected by several side airbag systems. In the event of a side impact, remote sensors transmit signals which are compared with those from the sensor in the central airbag control unit.

An extensive system of crash sensors ensures that the airbags are ignited at exactly the right moment. In addition to the upfront sensors, the triggering system comprises several remote satellite sensors at the sides.  All Audi A4/S4 models have provisions for mounting Isofix (LATCH) child seats on the outer positions of the rear seat. 

Available as an option is Audi's tire pressure monitoring system. The system monitors the tire pressure and temperature of each individual wheel. In the event of a loss of pressure, it informs the driver optically and acoustically via the display in the instrument cluster.  The system also is able to take minor changes in temperature and pressure caused, for instance, by intense sunshine, hot air coming from the engine or unusual weight distribution of the car into account, thus avoiding a false alarm.

Equipment

The new Audi A4/S4 is positioned in the midsize luxury segment. It stands out for a range of standard equipment with quality and comfort attributes that would not be out of place in the premium class.  There is a choice more than 10 body colors for the new Audi A4. The color spectrum ranges from particularly sporty shades such as Silver, metallic to Brilliant Red, and also includes the elegant colors in the range such as Liquid Blue, metallic and Dakar Beige, metallic.

As many as three alloy wheels (16- and 17-inch) are available from the launch date, giving drivers a further means of enhancing the characteristic appearance of their new Audi A4.

On the S4, the vehicle is available with a five-spoke 18-inch wheel with high performance tires to ensure an uncompromisingly sporty character in more ways other than just visually.

The interior also satisfies virtually every design requirement. Aluminum finish silver inlays for the center console or, Walnut brown and vavona wood inlays are available.

The optional Audi Navigation Plus system, which uses a DVD drive, helps the driver find the fastest route from A to B. Its operating principle follows the same clear logic as the Audi MMI, familiar from the A8 and A6.

The 6.5-inch color display shows the map and the visual route description, while the driver information system translates the corresponding directions into pictograms and adds information on directions, distances and arrival time.

The A4/S4 standard audio systems offer the ideal combination of convenience and equipment options for every customer:

- Second generation of the Audi Symphony radio

- In-dash six-disc changer (in glovebox if navigation is ordered)

- 10-speaker sound system

- Satellite radio preparation standard (US only)

- Choice of Sirius® or XM as factory option or dealer installed (US only)

The optional BOSE® sound system with AudioPilot noise compensation additionally provides a concert hall atmosphere in the A4.  The Audi range of unique options also offers perfect solutions for when the sun goes down: the best examples are the xenon plus headlights with outstanding dipped and main xenon beams and automatic-dynamic headlight range control. They illuminate the area in front of the car evenly and intensively.

Even better visibility on the road is ensured by adaptive light including xenon plus. Featuring swivel headlight units, this dynamic cornering light system activates effectively from a speed of about 7 mph and illuminates twists and turns in the road far more than a tradition lighting system. Daytime running lights, which can also be deactivated manually if required, complete the lighting package.

All Audi vehicles sold in North America, including the new Audi A4, come with the Audi Advantage, an industry-leading combination of warranties and protection. This top-rated package includes:

• Four-year/50,000-mile no-charge scheduled maintenance

• Four-year/50,000-mile limited new vehicle warranty

• 12-year limited warranty against corrosion perforation

• 24-hour Roadside Assistance for four years.

More information on all Audi models can be found at www.media.audiusa.com.