The Audi A6 Sedan (4G, C7) 3.0 TDI V6 (245 hp) quattro S tronic represents a sophisticated blend of performance, efficiency, and luxury within the C7 generation A6 lineup, produced between 2011 and 2014. Positioned as a mid-to-high range offering, this variant catered to buyers seeking a powerful diesel engine coupled with the convenience of an automatic transmission and Audi’s renowned quattro all-wheel-drive system. It served as a compelling alternative to the more fuel-efficient 2.0 TDI models and the performance-focused S6, offering a balanced driving experience for both daily commutes and long-distance travel.
Technical Specifications
| Brand | Audi |
| Model | A6 |
| Generation | A6 Sedan (4G, C7) |
| Type (Engine) | 3.0 TDI V6 (245 Hp) quattro S tronic |
| Start of production | 2011 |
| End of production | 2014 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 7.2 l/100 km (32.7 US mpg, 39.2 UK mpg, 13.9 km/l) |
| Fuel consumption (extra urban) | 5.2 l/100 km (45.2 US mpg, 54.3 UK mpg, 19.2 km/l) |
| Fuel consumption (combined) | 5.9 l/100 km (39.9 US mpg, 47.9 UK mpg, 16.9 km/l) |
| CO2 emissions | 156 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.1 sec |
| Acceleration 0 – 62 mph | 6.1 sec |
| Acceleration 0 – 60 mph | 5.8 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 7 kg/Hp, 142.4 Hp/tonne |
| Weight-to-torque ratio | 3 kg/Nm, 337.2 Nm/tonne |
| Power | 245 Hp @ 4000-4500 rpm |
| Power per litre | 82.6 Hp/l |
| Torque | 580 Nm @ 1750-2500 rpm (427.79 lb.-ft. @ 1750-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | CDUC, CDUD, CKVB, CKVC |
| 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 | 16.8:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.4 l (6.76 US qt | 5.63 UK qt) |
| Coolant | 11.5 l (12.15 US qt | 10.12 UK qt) |
| Kerb Weight | 1720 kg (3791.95 lbs.) |
| Max. weight | 2330 kg (5136.77 lbs.) |
| Max load | 610 kg (1344.82 lbs.) |
| Trunk (boot) space – minimum | 530 l (18.72 cu. ft.) |
| Trunk (boot) space – maximum | 995 l (35.14 cu. ft.) |
| Fuel tank capacity | 75 l (19.81 US gal | 16.5 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (8%) | 2100 kg (4629.71 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 85 kg (187.39 lbs.) |
| Length | 4915 mm (193.5 in.) |
| Width | 1874 mm (73.78 in.) |
| Width including mirrors | 2086 mm (82.13 in.) |
| Height | 1468 mm (57.8 in.) |
| Wheelbase | 2912 mm (114.65 in.) |
| Front track | 1627 mm (64.06 in.) |
| Rear (Back) track | 1618 mm (63.7 in.) |
| Front overhang | 912 mm (35.91 in.) |
| Rear overhang | 1091 mm (42.95 in.) |
| Drag coefficient (Cd) | 0.28 |
| Minimum turning circle (turning diameter) | 11.9 m (39.04 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 | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/55 R17 |
| Wheel rims size | 8J x 17 |
INTRODUCTION
The Audi A6 Sedan (4G, C7) 3.0 TDI V6 (245 hp) quattro S tronic, produced from 2011 to 2014, represents a key iteration of Audi’s popular executive sedan. Built on the 4G platform (also underpinning the A7 and Q5), this variant offered a compelling combination of performance, refinement, and all-weather capability. The 3.0 TDI engine, a mainstay of Audi’s European lineup, was paired with the S tronic 7-speed dual-clutch transmission and the quattro all-wheel-drive system, creating a vehicle designed for both comfortable long-distance cruising and spirited driving. This model occupied a sweet spot in the A6 range, appealing to buyers who desired more power and a more dynamic driving experience than the entry-level 2.0 TDI models, but without the higher price tag and more aggressive character of the S6.
Powertrain & Engine Architecture
At the heart of this A6 variant lies the 3.0-liter V6 turbocharged diesel engine, identified by engine codes CDUC, CDUD, CKVB, and CKVC. This engine utilizes a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. The engine features a sophisticated turbocharger and intercooler setup to boost power and efficiency. The valvetrain employs double overhead camshafts (DOHC) with four valves per cylinder, contributing to its strong performance across the rev range. The S tronic 7-speed dual-clutch transmission provides incredibly fast and smooth gear changes, enhancing both acceleration and fuel economy. This transmission operates with two separate clutches, pre-selecting the next gear for near-instantaneous shifts. The quattro all-wheel-drive system utilizes a Torsen center differential, distributing torque between the front and rear axles as needed, providing excellent traction in all conditions.
Driving Characteristics
The 3.0 TDI with the S tronic transmission delivers a refined and responsive driving experience. The engine produces a substantial 580 Nm (427.79 lb-ft) of torque, available from a low 1750 rpm, providing strong acceleration in virtually any gear. The S tronic transmission’s quick shifts contribute to a 0-60 mph time of around 5.8 seconds, making it a genuinely quick sedan. Compared to the 2.0 TDI models, the 3.0 TDI offers significantly more power and a broader torque curve, resulting in effortless overtaking and a more relaxed driving experience, especially on the highway. While not as overtly sporty as the S6, the 3.0 TDI provides a well-balanced chassis and precise steering, making it enjoyable to drive on winding roads. The gear ratios in the S tronic transmission are optimized for both performance and fuel efficiency, allowing the engine to operate in its sweet spot for most driving situations.
Equipment & Trim Levels
The A6 3.0 TDI quattro S tronic typically came well-equipped as standard. Features included leather upholstery, tri-zone automatic climate control, a multi-function steering wheel, and Audi’s MMI infotainment system with a central display screen. Standard safety features included ABS, electronic stability control, and multiple airbags. Optional extras included features like a navigation system, premium sound system (Bang & Olufsen), adaptive cruise control, parking sensors, and a sunroof. Trim levels varied slightly depending on the market, but generally offered packages that added features like upgraded interior trim, larger wheels, and advanced driver-assistance systems.
Chassis & Braking
The A6 C7 featured an independent multi-link suspension at the front and an independent trapezoidal link suspension at the rear, providing a comfortable ride and good handling characteristics. The suspension was tuned to balance comfort and control, offering a composed ride even on uneven surfaces. Braking duties were handled by ventilated discs on all four wheels, providing ample stopping power. The ABS (Anti-lock Braking System) and electronic stability control systems further enhanced safety and control. Stabilizer bars were fitted front and rear to reduce body roll during cornering.
Market Reception & Comparison
The Audi A6 3.0 TDI quattro S tronic was generally well-received by automotive critics. It was praised for its powerful and refined engine, smooth-shifting transmission, and all-weather capability. Compared to the 2.0 TDI models, the 3.0 TDI offered a significant performance upgrade, while still maintaining respectable fuel economy. Against competitors like the BMW 530d and Mercedes-Benz E350 CDI, the A6 3.0 TDI was often seen as a strong contender, offering a compelling blend of performance, luxury, and technology. Fuel economy was a strong point, averaging around 39.9 US mpg in combined driving, making it a relatively economical option for a vehicle of its size and performance.
Legacy
The 3.0 TDI engine, in various iterations, proved to be a reliable and durable powertrain. While diesel engines, in general, have faced increased scrutiny in recent years, the 3.0 TDI remains a popular choice in the used car market. Properly maintained examples of the A6 3.0 TDI quattro S tronic continue to offer a comfortable, capable, and relatively economical driving experience. Common maintenance items include regular oil changes, filter replacements, and occasional attention to the turbocharger and fuel injection system. The S tronic transmission, while generally reliable, may require servicing at higher mileages. Overall, this variant of the A6 remains a well-regarded and desirable executive sedan.
