The Audi S4 (B8) 3.0 TFSI quattro, produced from March 2009 to 2011, represents the performance-oriented variant of the B8 Audi A4 generation. Positioned above the standard A4 and below the even more potent RS4, the S4 aimed to deliver a compelling blend of luxury, everyday usability, and exhilarating performance. This specific configuration, powered by the 3.0-liter supercharged V6 engine producing 333 horsepower and paired with a six-speed manual transmission, was a key offering in Audi’s lineup, appealing to enthusiasts seeking a driver-focused experience. The B8 S4 was primarily marketed in Europe, North America, and other global markets where Audi had a strong presence.
Technical Specifications
| Brand | Audi |
| Model | S4 |
| Generation | S4 (B8) |
| Type (Engine) | 3.0 TFSI V6 (333 Hp) quattro |
| Start of production | March, 2009 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 13.7 l/100 km (17.2 US mpg, 20.6 UK mpg, 7.3 km/l) |
| Fuel consumption (extra urban) | 7.3 l/100 km (32.2 US mpg, 38.7 UK mpg, 13.7 km/l) |
| Fuel consumption (combined) | 9.7 l/100 km (24.2 US mpg, 29.1 UK mpg, 10.3 km/l) |
| CO2 emissions | 225 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.1 sec |
| Acceleration 0 – 62 mph | 5.1 sec |
| Acceleration 0 – 60 mph | 4.8 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 5 kg/Hp, 201.8 Hp/tonne |
| Weight-to-torque ratio | 3.8 kg/Nm, 266.7 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 | 1650 kg (3637.63 lbs.) |
| Max. weight | 2200 kg (4850.17 lbs.) |
| Max load | 550 kg (1212.54 lbs.) |
| Trunk (boot) space – minimum | 480 l (16.95 cu. ft.) |
| Trunk (boot) space – maximum | 962 l (33.97 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 | 1406 mm (55.35 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) | 0.282 |
| 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 | 6 gears, manual transmission |
| 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 |
INTRODUCTION
The Audi S4 (B8) 3.0 TFSI quattro, launched in 2009, represented a significant step forward for the performance-oriented A4 variant. Built on the Volkswagen Group’s B8 platform (shared with the A4, A5, and Q5), the S4 aimed to bridge the gap between the everyday A4 and the track-focused RS4. This particular iteration, equipped with the supercharged 3.0-liter V6 engine and a six-speed manual transmission, offered a compelling combination of power, handling, and refinement. It was positioned as the enthusiast’s choice within the S4 lineup, offering a more engaging driving experience than the available S tronic (dual-clutch) automatic transmission.
Powertrain & Engine Architecture
At the heart of the S4 (B8) 3.0 TFSI lies the EA837 engine, a 3.0-liter V6 utilizing a Roots-type supercharger and direct fuel injection. The engine codes CAKA and CCBA were commonly used, with minor variations depending on the specific market. Unlike traditional turbocharged engines, the supercharger provides instant boost across the rev range, resulting in a remarkably linear power delivery. The direct injection system precisely meters fuel into the combustion chambers, optimizing efficiency and reducing emissions. The engine produces 333 horsepower at 5500-7000 rpm and 324.53 lb-ft of torque between 2900-5300 rpm. The six-speed manual transmission, known for its precise shift quality, allows for full driver control. The quattro all-wheel-drive system, a hallmark of Audi performance models, distributes power between the front and rear axles as needed, enhancing traction and stability.
Driving Characteristics
The 3.0 TFSI engine paired with the manual transmission delivers a distinctly engaging driving experience. The supercharger eliminates turbo lag, providing immediate throttle response and strong acceleration throughout the rev range. While not as brutally fast as some of its competitors, the S4 offers a refined and predictable power delivery that makes it enjoyable to drive in a variety of conditions. The six-speed manual transmission allows for precise gear selection, and the quattro all-wheel-drive system provides exceptional grip, particularly in inclement weather. Compared to the S tronic automatic, the manual transmission offers a more connected feel and greater driver involvement. The gear ratios are well-matched to the engine’s powerband, providing strong acceleration in each gear.
Equipment & Trim Levels
The S4 (B8) 3.0 TFSI typically came well-equipped as standard. Interior features included sport seats upholstered in Milano leather, a three-spoke multifunction steering wheel, and aluminum interior trim. Standard exterior features included 18-inch alloy wheels, S-line body styling, and xenon headlights. Optional extras included a premium sound system (Bang & Olufsen), navigation system, sunroof, and advanced driver-assistance systems such as adaptive cruise control and blind-spot monitoring. The S4’s interior was generally considered to be well-built and comfortable, with a focus on sporty elegance.
Chassis & Braking
The S4 (B8) featured a sport-tuned suspension compared to the standard A4, with stiffer springs and dampers. The front suspension utilized a multi-link design, while the rear suspension employed a trapezoidal link setup. Larger brakes, with ventilated discs at all four corners, provided ample stopping power. ABS (Anti-lock braking system) was standard. The chassis was designed to provide a balance between comfort and handling, offering a firm but not overly harsh ride. The S4’s steering was precise and well-weighted, providing good feedback to the driver.
Market Reception & Comparison
The Audi S4 (B8) 3.0 TFSI was generally well-received by automotive critics. It was praised for its powerful and responsive engine, its refined handling, and its luxurious interior. Compared to the A4, the S4 offered a significant performance upgrade. Compared to the BMW M3 of the same era, the S4 was often seen as a more comfortable and practical choice, although the M3 offered a more focused driving experience. The S4’s fuel economy was reasonable for a performance car, averaging around 24.2 US mpg in combined driving. Reliability was generally good, although some owners reported issues with the timing chain tensioner and water pump.
Legacy
The Audi S4 (B8) 3.0 TFSI has become a popular choice among enthusiasts in the used car market. The 3.0 TFSI engine is known for its durability and tunability, and the manual transmission is highly sought after. While maintenance costs can be higher than those of a standard A4, the S4’s performance and driving experience make it a worthwhile investment for those seeking a sporty and refined sedan. The B8 S4 remains a compelling option for those looking for a performance car that can be enjoyed both on the road and on the track.
