The Audi A4 (B9 8W) 3.0 TDI V6 quattro S tronic represents a compelling blend of performance, efficiency, and luxury within the fifth generation of Audi’s popular A4 model line. Produced from 2015 to 2018, this variant occupied a premium position in the A4 range, offering a significant step up in power and all-weather capability compared to lower-trim models. It was primarily marketed in Europe and other regions where diesel engines remained highly popular, serving as a sophisticated choice for both executive transport and enthusiastic drivers.
Technical Specifications
| Brand | Audi |
| Model | A4 |
| Generation | A4 (B9 8W) |
| Type (Engine) | 3.0 TDI V6 (218 Hp) quattro S tronic |
| Start of production | 2015 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 5.1 – 4.9 l/100 km (46.1 – 48 US mpg, 55.4 – 57.6 UK mpg, 19.6 – 20.4 km/l) |
| Fuel consumption (extra urban) | 4.7 – 4.4 l/100 km (50 – 53.5 US mpg, 60.1 – 64.2 UK mpg, 21.3 – 22.7 km/l) |
| Fuel consumption (combined) | 4.8 – 4.6 l/100 km (49 – 51.1 US mpg, 58.9 – 61.4 UK mpg, 20.8 – 21.7 km/l) |
| CO2 emissions | 127 – 119 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.3 sec |
| Acceleration 0 – 62 mph | 6.3 sec |
| Acceleration 0 – 60 mph | 6 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 7.4 kg/Hp, 134.6 Hp/tonne |
| Weight-to-torque ratio | 4.1 kg/Nm, 246.9 Nm/tonne |
| Power | 218 Hp @ 4000-5000 rpm |
| Power per litre | 73.5 Hp/l |
| Torque | 400 Nm @ 1500-3000 rpm (295.02 lb.-ft. @ 1500-3000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | CSWB |
| Engine displacement | 2967 cm3 (181.06 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 91.4 mm (3.6 in.) |
| Compression ratio | 16:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 6.1 l (6.45 US qt | 5.37 UK qt) |
| Kerb Weight | 1620 kg (3571.49 lbs.) |
| Max. weight | 2190 kg (4828.12 lbs.) |
| Max load | 570 kg (1256.63 lbs.) |
| Trunk (boot) space – minimum | 480 l (16.95 cu. ft.) |
| Trunk (boot) space – maximum | 965 l (34.08 cu. ft.) |
| Fuel tank capacity | 58 l (15.32 US gal | 12.76 UK gal) |
| Max. roof load | 90 kg (198.42 lbs.) |
| Permitted trailer load with brakes (8%) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load with brakes (12%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 80 kg (176.37 lbs.) |
| Length | 4726 mm (186.06 in.) |
| Width | 1842 mm (72.52 in.) |
| Width including mirrors | 2022 mm (79.61 in.) |
| Height | 1427 mm (56.18 in.) |
| Wheelbase | 2820 mm (111.02 in.) |
| Front track | 1572 mm (61.89 in.) |
| Rear (Back) track | 1555 mm (61.22 in.) |
| Front overhang | 880 mm (34.65 in.) |
| Rear overhang | 1026 mm (40.39 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle (turning diameter) | 11.6 m (38.06 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives permanently the four wheels of the vehicle. |
| 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 multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/50 R17 |
| Wheel rims size | 7.5J x 17 |
INTRODUCTION
The Audi A4 (B9) 3.0 TDI quattro S tronic, launched in 2015, represented a significant offering within the A4 range. Built on the Volkswagen Group’s MLB Evo platform (specifically the 8W variant), it aimed to deliver a premium driving experience with strong performance and all-weather capability. This model sat towards the upper end of the A4 lineup, positioned below the performance-oriented S4 but above the more economical 2.0 TDI and 1.4 TFSI variants. The B9 generation A4 brought a new level of technology and refinement to the compact executive segment, and the 3.0 TDI was a key component of that strategy.
Powertrain & Engine Architecture
At the heart of the A4 3.0 TDI lies the CSWB engine, a 3.0-liter V6 turbodiesel. This engine is a member of Audi’s modular engine family, known for its robust construction and sophisticated technology. The CSWB utilizes a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. It features a single turbocharger with an intercooler to enhance power and efficiency. The engine produces 218 horsepower at 4000-5000 rpm and a substantial 400 Nm (295 lb-ft) of torque between 1500-3000 rpm. This broad torque curve provides strong acceleration in virtually any gear.
Paired with the engine is Audi’s seven-speed S tronic dual-clutch transmission. This transmission offers incredibly fast and smooth gear changes, contributing to both performance and fuel economy. The S tronic is known for its responsiveness and ability to adapt to driving conditions. Power is then distributed to all four wheels via Audi’s quattro all-wheel-drive system, providing excellent traction and stability, particularly in adverse weather conditions.
Driving Characteristics
The A4 3.0 TDI quattro S tronic delivers a refined and confident driving experience. The abundant torque from the V6 engine provides effortless acceleration, making overtaking and highway cruising a breeze. While not as overtly sporty as the S4, the 3.0 TDI offers a pleasing balance between performance and comfort. The S tronic transmission contributes to a seamless driving experience, with quick and precise gear changes. The quattro all-wheel-drive system inspires confidence in all conditions, providing exceptional grip and stability. Compared to the 2.0 TDI models, the 3.0 TDI offers a noticeably more powerful and refined experience, while the manual transmission options in the lower trims lack the smoothness and convenience of the S tronic.
Equipment & Trim Levels
The A4 3.0 TDI quattro S tronic typically came well-equipped, reflecting its position as a premium variant. Standard features often included Audi’s MMI infotainment system with a central display screen, leather upholstery, three-zone automatic climate control, and a suite of driver-assistance systems such as parking sensors and cruise control. Optional extras could include features like a Bang & Olufsen sound system, a virtual cockpit digital instrument cluster, and advanced driver-assistance packages with features like adaptive cruise control and lane-keeping assist. Interior trim levels varied, with options for different wood or aluminum inlays.
Chassis & Braking
The B9 A4 features a sophisticated chassis design with independent multi-link suspension at both the front and rear. This suspension setup provides a comfortable ride while maintaining good handling characteristics. The 3.0 TDI models typically featured slightly stiffer suspension components compared to the lower-trim models to better manage the increased power and weight. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. The electronic stability control (ESC) system works in conjunction with the ABS to enhance safety and stability.
Market Reception & Comparison
The Audi A4 3.0 TDI quattro S tronic was generally well-received by automotive critics. It was praised for its powerful and refined engine, smooth transmission, and all-weather capability. Fuel economy was also considered to be competitive for a vehicle of its class. Compared to the 2.0 TDI models, the 3.0 TDI offered a significant performance upgrade, but at a higher price point. The 3.0 TDI also offered a more refined driving experience compared to some of its rivals, such as the BMW 330d and the Mercedes-Benz C300d.
Legacy
The 3.0 TDI engine proved to be a reliable and durable powertrain, although, like all modern diesel engines, it is susceptible to issues related to the diesel particulate filter (DPF) if not properly maintained. The S tronic transmission is also generally reliable, but requires regular servicing to ensure optimal performance. Today, the B9 A4 3.0 TDI quattro S tronic remains a desirable used car, offering a compelling combination of performance, luxury, and practicality. Its strong engine and all-wheel-drive system make it a capable and comfortable vehicle for a variety of driving conditions.
