Technical Specifications
| Brand | Audi |
| Model | A6 |
| Generation | A6 Sedan (4G, C7) |
| Type (Engine) | 3.0 TDI V6 clean diesel (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) | 7.3 l/100 km (32.2 US mpg, 38.7 UK mpg, 13.7 km/l) |
| Fuel consumption (extra urban) | 5.1 l/100 km (46.1 US mpg, 55.4 UK mpg, 19.6 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 | 6.2 sec |
| Acceleration 0 – 62 mph | 6.2 sec |
| Acceleration 0 – 60 mph | 5.9 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 7.2 kg/Hp, 139.2 Hp/tonne |
| Weight-to-torque ratio | 3 kg/Nm, 329.5 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 | 1760 kg (3880.14 lbs.) |
| Max. weight | 2370 kg (5224.96 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 |
The Audi A6 Sedan (4G, C7) 3.0 TDI V6 clean diesel quattro S tronic, produced between 2011 and 2014, was a key model within Audi’s successful A6 range. The C7 generation A6, built on the Volkswagen Group’s MLB platform (shared with models like the Porsche Panamera and Bentley Continental GT), represented a significant step forward in terms of technology, refinement, and driving dynamics. This particular variant, powered by the 3.0-liter TDI engine and paired with the S tronic dual-clutch transmission and quattro all-wheel drive, aimed to deliver a compelling combination of performance, efficiency, and all-weather capability. It was positioned as a premium offering, appealing to buyers seeking a luxurious and capable executive sedan.
Powertrain & Engine Architecture
At the heart of this A6 variant lies the 3.0-liter V6 TDI engine, identified by engine codes such as CDUC, CDUD, CKVB, and CKVC. This engine is a common-rail direct injection diesel, utilizing piezo injectors for precise fuel delivery. The engine features a single turbocharger with variable geometry turbine (VGT) technology and an intercooler to enhance performance and efficiency. The V6 configuration provides inherent smoothness and balance. The engine produces 245 horsepower between 4000 and 4500 rpm and a substantial 580 Nm (427.79 lb-ft) of torque from 1750 to 2500 rpm. The S tronic 7-speed dual-clutch transmission offers rapid and seamless gear changes, contributing to both performance and fuel economy. Unlike a traditional automatic, the S tronic uses two separate clutches – one for even gears and one for odd gears – allowing for pre-selection of the next gear and virtually eliminating torque interruption during shifts.
Driving Characteristics
The 3.0 TDI with the S tronic transmission delivers a refined and responsive driving experience. The readily available torque provides strong acceleration in everyday driving situations, with the 0-60 mph sprint taking approximately 5.9 seconds. The S tronic transmission contributes to this responsiveness, offering quick and precise shifts. Compared to the 2.0 TDI models, the 3.0 TDI offers significantly more power and a more relaxed driving experience, particularly when fully loaded or traveling at highway speeds. While not as overtly sporty as the S6, the 3.0 TDI provides ample performance for most drivers. The quattro all-wheel drive system ensures excellent traction and stability in all weather conditions, enhancing driver confidence. The gear ratios are tuned for a balance between acceleration and fuel efficiency, with a relatively tall seventh gear for comfortable highway cruising.
Equipment & Trim Levels
The 3.0 TDI quattro S tronic typically came well-equipped, reflecting its premium positioning. Standard features often included leather upholstery, tri-zone automatic climate control, a multi-function steering wheel, and Audi’s MMI infotainment system with a central display screen. Optional extras were plentiful, including features like adaptive cruise control, a Bang & Olufsen sound system, heated and ventilated front seats, and a panoramic sunroof. Trim levels varied by market, but generally offered increasing levels of luxury and technology. Interior color schemes typically included black, gray, and brown leather options, with a choice of wood or aluminum trim accents.
Chassis & Braking
The C7 A6 featured a sophisticated chassis design, utilizing an independent multi-link suspension at the front and an independent trapezoidal link suspension at the rear. This setup provides a comfortable ride while maintaining good handling characteristics. The 3.0 TDI models typically featured larger brakes than the entry-level variants, with ventilated discs at all four corners. ABS (Anti-lock Braking System) was standard, along with electronic stability control. The steering system employed an electric power steering system, offering precise and responsive steering feel.
Market Reception & Comparison
The Audi A6 3.0 TDI quattro S tronic was generally well-received by automotive critics. It was praised for its refined engine, smooth transmission, comfortable ride, and sophisticated interior. Compared to its rivals, such as the BMW 530d and Mercedes-Benz E350 CDI, the A6 offered a compelling blend of performance, luxury, and technology. Fuel economy was a strong point, with combined fuel consumption figures around 39.9 US mpg. Reliability was generally good, although some owners reported issues with the diesel particulate filter (DPF) and turbocharger over the long term. The 2.0 TDI models offered lower running costs but lacked the performance and refinement of the 3.0 TDI. The S6, while offering significantly more performance, came at a considerably higher price point.
Legacy
The 3.0 TDI engine proved to be a durable and reliable powerplant when properly maintained. The S tronic transmission, while offering excellent performance, can require more frequent servicing than a traditional automatic transmission. Today, used examples of the C7 A6 3.0 TDI are readily available and represent a good value for buyers seeking a luxurious and capable executive sedan. Regular maintenance, including timely servicing of the DPF and turbocharger, is crucial to ensure long-term reliability. The combination of performance, efficiency, and all-wheel drive capability continues to make this variant a desirable choice in the used car market.
