2004-2008 Audi S4 Avant (8EB7) 4.2i V8 (344 Hp) quattro

The Audi S4 Avant (8E, B7) 4.2i V8 quattro, produced between August 2004 and June 2008, represents a high-performance iteration of Audi’s popular Avant (station wagon) model. Positioned as the performance variant of the B7 generation A4 Avant, the S4 offered a significant step up in power and handling compared to the standard models. It was a key offering in the European market, where the demand for performance wagons was – and remains – substantial. The B7 generation, while a refinement of the earlier 8E platform (introduced in 2002), brought styling updates and mechanical improvements, solidifying the S4 Avant’s position as a desirable enthusiast vehicle. This particular variant, equipped with the naturally aspirated 4.2-liter V8 engine and a six-speed manual transmission, is considered by many to be the sweet spot in the B7 S4 lineup, offering a compelling blend of performance, practicality, and driver engagement.

Technical Specifications

Powertrain & Engine Architecture

The heart of the S4 Avant (8E, B7) 4.2i is the BBK engine code, a 4.2-liter naturally aspirated V8. This engine, a descendant of the V8 used in the Lamborghini Gallardo and Audi R8, is notable for its high-revving character and smooth power delivery. It features a 90-degree V-angle, contributing to its inherent balance. The engine utilizes a multi-port fuel injection system, delivering fuel directly into the intake ports. The double overhead camshafts (DOHC) operate five valves per cylinder (four intake, one exhaust), maximizing volumetric efficiency. The six-speed manual transmission, a Getrag unit, was the standard offering, providing precise shifts and a direct connection to the engine. The quattro all-wheel-drive system, a hallmark of Audi performance models, distributes power between the front and rear axles, enhancing traction and stability, particularly in adverse weather conditions.

Driving Characteristics

The 4.2-liter V8, producing 344 horsepower and 302 lb-ft of torque, delivers a thrilling driving experience. Acceleration from 0-60 mph takes approximately 5.5 seconds, and the car feels remarkably composed at higher speeds. Compared to the 2.0T FSI models, the V8 offers a significantly broader powerband and a more linear power delivery. While the turbocharged four-cylinder models provided strong low-end torque, the V8 required the driver to rev the engine to access its full potential. The six-speed manual transmission’s gear ratios are well-matched to the engine’s characteristics, allowing for spirited driving on both winding roads and open highways. The quattro all-wheel-drive system provides exceptional grip, inspiring confidence in all conditions. Compared to the later S4 models that adopted supercharging, this naturally aspirated V8 is often praised for its more organic and engaging driving feel.

Equipment & Trim Levels

The S4 Avant (8E, B7) came well-equipped as standard. Interior features typically included sport seats upholstered in Milano leather, a three-spoke sport steering wheel, and aluminum trim accents. The instrument cluster featured unique S4-specific graphics. Standard exterior features included a distinctive S-line body kit, including front and rear bumpers, side skirts, and a rear spoiler. Optional extras included a sunroof, navigation system, Bose premium sound system, and parking sensors. The S4 Avant occupied the premium segment of the A4 Avant lineup, offering a significant step up in performance and luxury compared to the base models.

Chassis & Braking

The S4 Avant featured a sport-tuned suspension, lowering the ride height and stiffening the dampers for improved handling. The front suspension utilized independent multi-link technology, while the rear suspension employed an independent trapezoidal lever setup. Braking duties were handled by ventilated discs on all four wheels, providing ample stopping power. ABS (Anti-lock braking system) was standard. Compared to the standard A4 Avant, the S4 benefited from larger stabilizer bars, further reducing body roll during cornering.

Market Reception & Comparison

The S4 Avant (8E, B7) 4.2i V8 quattro was generally well-received by automotive critics. It was praised for its powerful engine, engaging driving dynamics, and practical wagon body style. Fuel economy, however, was a common criticism, with combined fuel consumption averaging around 17.6 US mpg. Compared to the 1.8T and 3.0-liter V6 A4 Avant models, the S4 offered significantly more performance but at the cost of increased fuel consumption and maintenance expenses. The V8 engine, while robust, required more frequent and costly maintenance than the smaller displacement engines.

Legacy

The S4 Avant (8E, B7) 4.2i V8 quattro has developed a strong following among Audi enthusiasts. The naturally aspirated V8 engine is highly regarded for its sound and character. While the engine is generally reliable, preventative maintenance, such as regular oil changes and timing chain inspection, is crucial. The car’s quattro all-wheel-drive system remains a significant asset, providing confidence and stability in all weather conditions. Today, well-maintained examples of the B7 S4 Avant command a premium in the used car market, appealing to drivers who appreciate a blend of performance, practicality, and classic Audi engineering.