The Audi S4 Avant (B8) 3.0 TFSI quattro S tronic, produced from March 2009 to 2011, represents a compelling blend of performance and practicality within the B8 generation of Audi’s renowned S4 model line. Positioned as the performance-oriented wagon variant, it catered to buyers seeking the thrills of an S4 with the added versatility of a station wagon (estate) body style. This particular configuration, featuring the 3.0-liter TFSI V6 engine paired with the seven-speed S tronic dual-clutch transmission and Audi’s quattro all-wheel-drive system, was a key offering in European and select international markets, though less common in the United States where the S4 Avant was not officially sold during this generation.
Technical Specifications
| Brand | Audi |
| Model | S4 |
| Generation | S4 Avant (B8) |
| Type (Engine) | 3.0 TFSI V6 (333 Hp) quattro S tronic |
| Start of production | March, 2009 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban | 13.8 l/100 km (17 US mpg, 20.5 UK mpg, 7.2 km/l) |
| Fuel consumption (economy) – extra urban | 7.3 l/100 km (32.2 US mpg, 38.7 UK mpg, 13.7 km/l) |
| Fuel consumption (economy) – combined | 9.7 l/100 km (24.2 US mpg, 29.1 UK mpg, 10.3 km/l) |
| CO2 emissions | 224 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.4 sec |
| Acceleration 0 – 62 mph | 5.4 sec |
| Acceleration 0 – 60 mph | 5.1 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 5.2 kg/Hp, 191.9 Hp/tonne |
| Weight-to-torque ratio | 3.9 kg/Nm, 253.6 Nm/tonne |
| Power | 333 Hp @ 5500-7000 rpm |
| Power per litre | 111.2 Hp/l |
| Torque | 440 Nm @ 2900-5300 rpm (324.53 lb.-ft. @ 2900-5300 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | CAKA, CCBA |
| Engine displacement | 2995 cm3 (182.77 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 84.5 mm (3.33 in.) |
| Piston Stroke | 89 mm (3.5 in.) |
| Compression ratio | 10.3:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Supercharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.2 l (6.55 US qt | 5.46 UK qt) |
| Coolant | 11.1 l (11.73 US qt | 9.77 UK qt) |
| Kerb Weight | 1735 kg (3825.02 lbs.) |
| Max. weight | 2305 kg (5081.66 lbs.) |
| Max load | 570 kg (1256.63 lbs.) |
| Trunk (boot) space – minimum | 490 l (17.3 cu. ft.) |
| Trunk (boot) space – maximum | 1430 l (50.5 cu. ft.) |
| Fuel tank capacity | 64 l (16.91 US gal | 14.08 UK gal) |
| Max. roof load | 90 kg (198.42 lbs.) |
| Permitted trailer load with brakes (8%) | 2100 kg (4629.71 lbs.) |
| Permitted trailer load with brakes (12%) | 1900 kg (4188.78 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 80 kg (176.37 lbs.) |
| Length | 4717 mm (185.71 in.) |
| Width | 1826 mm (71.89 in.) |
| Height | 1415 mm (55.71 in.) |
| Wheelbase | 2811 mm (110.67 in.) |
| Front track | 1552 mm (61.1 in.) |
| Rear (Back) track | 1539 mm (60.59 in.) |
| Drag coefficient (Cd) | 0.325 |
| Minimum turning circle (turning diameter) | 11.5 m (37.73 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 7 gears, automatic transmission S tronic |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent on trapezoidal lever |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 245/40 R18 |
| Wheel rims size | 8J x 18 |
Powertrain & Engine Architecture
At the heart of the S4 Avant (B8) 3.0 TFSI lies the CAKA or CCBA engine code, a 2,995 cc naturally aspirated V6 engine. This engine is a member of Audi’s TFSI (Turbocharged Fuel Stratified Injection) family, though this specific variant does *not* employ a turbocharger. Instead, it utilizes direct fuel injection and a high compression ratio of 10.3:1 to achieve its impressive power output. The engine features a dual overhead camshaft (DOHC) valvetrain with four valves per cylinder, optimizing airflow for enhanced performance. The S tronic seven-speed dual-clutch transmission provides rapid and seamless gear changes, contributing to the car’s brisk acceleration. This transmission offers both automatic and manual shifting modes, allowing the driver to tailor the driving experience.
Driving Characteristics
The 333 horsepower and 324.53 lb-ft of torque delivered by the 3.0 TFSI engine, combined with the quattro all-wheel-drive system, resulted in a 0-60 mph time of approximately 5.1 seconds. While not as explosively quick as the later turbocharged S4 models, this variant offered a smooth and linear power delivery. The S tronic transmission’s quick shifts and well-chosen gear ratios ensured that the engine remained in its optimal power band. Compared to the standard A4 Avant, the S4 Avant provided a significantly more engaging driving experience, with sharper throttle response and more confident handling. The automatic transmission, while efficient, didn’t offer the same level of driver involvement as the six-speed manual transmission available on some S4 models.
Equipment & Trim Levels
The S4 Avant (B8) 3.0 TFSI quattro S tronic typically came well-equipped as standard. Interior features included sport seats upholstered in a combination of leather and Alcantara, a three-spoke multifunction steering wheel, and aluminum trim accents. Optional extras included navigation system, Bang & Olufsen sound system, sunroof, and advanced driver-assistance systems. The exterior styling was distinguished by subtle but sporty enhancements, such as a unique front grille, S4 badging, and quad exhaust outlets.
Chassis & Braking
The S4 Avant featured a sport-tuned suspension with stiffer springs and dampers compared to the standard A4 Avant. The front suspension utilized an independent multi-link design, while the rear suspension employed an independent trapezoidal lever setup. Braking duties were handled by ventilated discs at all four corners, providing ample stopping power. ABS (Anti-lock Braking System) was standard, enhancing safety and stability.
Market Reception & Comparison
The S4 Avant (B8) 3.0 TFSI quattro S tronic was generally well-received by automotive critics. It was praised for its balanced performance, comfortable ride, and practical wagon body style. Compared to the later turbocharged S4 models, this variant was often seen as offering a more refined and less aggressive driving experience. Fuel economy was respectable for a performance car of its class, averaging around 24.2 US mpg in combined driving. Reliability was generally good, although preventative maintenance, particularly regarding oil changes, was crucial for long-term durability.
Legacy
The Audi S4 Avant (B8) 3.0 TFSI quattro S tronic remains a desirable used car today, particularly among enthusiasts who appreciate its blend of performance, practicality, and understated styling. The naturally aspirated V6 engine is known for its reliability and smooth operation, making it a relatively low-risk purchase compared to some of the more complex turbocharged engines of the era. While not as common as the sedan version, the Avant offers a unique and appealing alternative for those seeking a high-performance wagon.
