The Audi A6 Avant (4G, C7) 3.0 TDI V6 clean diesel, equipped with the quattro all-wheel drive system and a seven-speed S tronic dual-clutch transmission, represents a sophisticated blend of performance, practicality, and technology within the C7 generation A6 lineup. Produced from 2011 to 2014, this variant occupied a premium position, offering a significant step up in power and refinement compared to the lower-trim 2.0 TDI models, while remaining more accessible than the performance-oriented S6. It was primarily marketed in Europe and other regions where diesel-powered wagons held significant market share, appealing to buyers seeking a luxurious and capable family vehicle.
Technical Specifications
| Brand | Audi |
| Model | A6 |
| Generation | A6 Avant (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 | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| 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 | 249 km/h (154.72 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 7.5 kg/Hp, 133.5 Hp/tonne |
| Weight-to-torque ratio | 3.2 kg/Nm, 316.1 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 | 1835 kg (4045.48 lbs.) |
| Max. weight | 2370 kg (5224.96 lbs.) |
| Max load | 535 kg (1179.47 lbs.) |
| Trunk (boot) space – minimum | 565 l (19.95 cu. ft.) |
| Trunk (boot) space – maximum | 1680 l (59.33 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 85 kg (187.39 lbs.) |
| Length | 4926 mm (193.94 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 | 1874 mm (73.78 in.) |
| Rear (Back) track | 1618 mm (63.7 in.) |
| Front overhang | 912 mm (35.91 in.) |
| Rear overhang | 1102 mm (43.39 in.) |
| Ride height (ground clearance) | 117 mm (4.61 in.) |
| Drag coefficient (Cd) | 0.26 |
| 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 Avant (4G, C7) 3.0 TDI V6 clean diesel quattro S tronic, produced between 2011 and 2014, is a station wagon (estate) that forms part of the fourth generation (C7) of the Audi A6 series. Built on the Volkswagen Group’s 1HX0/A3 platform, this variant aimed to deliver a premium experience combining practicality with strong performance. It slotted into the A6 Avant range as a high-end offering, positioned above the 2.0 TDI models and below the performance-focused S6 Avant. The “clean diesel” designation indicated the engine’s compliance with contemporary emissions standards, a key selling point in European markets.
Powertrain & Engine Architecture
At the heart of this A6 Avant lies the 3.0-liter V6 TDI engine, specifically utilizing engine codes such as CDUC, CDUD, CKVB, and CKVC. This engine is a longitudinally mounted, turbocharged diesel powerplant featuring a common rail direct injection system. The engine benefits from a sophisticated turbocharger and intercooler setup, optimizing air intake for increased power and efficiency. The valvetrain employs a Dual Overhead Camshaft (DOHC) configuration with four valves per cylinder, contributing to efficient combustion. The S tronic seven-speed dual-clutch transmission is a crucial component, offering rapid and smooth gear changes. This transmission features two clutches, allowing for pre-selection of the next gear, resulting in virtually seamless shifts. The quattro all-wheel-drive system distributes power between the front and rear axles, enhancing traction and stability, particularly in adverse weather conditions.
Driving Characteristics
The 3.0 TDI V6 with the S tronic transmission delivers a refined and responsive driving experience. The engine produces 245 horsepower and a substantial 427.79 lb.-ft. of torque, available from as low as 1750 rpm. This abundant torque provides strong acceleration in everyday driving situations and effortless overtaking capabilities. The S tronic transmission’s quick shifts contribute to a sporty feel, while the quattro system ensures confident handling in various conditions. Compared to the 2.0 TDI variants, the 3.0 TDI offers significantly more power and a smoother, more relaxed driving experience. While not as overtly sporty as the S6, the 3.0 TDI provides a compelling balance between performance and comfort. The gear ratios are tuned for both fuel efficiency and responsive acceleration, making it a versatile option for long-distance journeys and daily commutes.
Equipment & Trim Levels
The A6 Avant 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 color display. Standard safety features encompassed ABS, electronic stability control, and multiple airbags. Optional extras commonly included features like a navigation system, advanced parking assistance, a premium sound system (often Bang & Olufsen), and adaptive cruise control. Interior trim levels varied, with options for different wood or aluminum inlays. Exterior options included various wheel designs and metallic paint finishes.
Chassis & Braking
The C7 A6 Avant features an independent multi-link suspension at the front and an independent suspension on trapezoidal levers at the rear, providing a comfortable and controlled ride. The suspension is tuned to balance handling and comfort, absorbing road imperfections effectively. Braking duties are handled by ventilated discs on all four wheels, providing ample stopping power. The anti-lock braking system (ABS) and electronic stability control (ESC) further enhance safety. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The Audi A6 Avant 3.0 TDI quattro S tronic was generally well-received by automotive critics. It was praised for its refined engine, smooth transmission, and comfortable ride. The spacious interior and practical wagon body style were also highlighted as strengths. Compared to the 2.0 TDI models, the 3.0 TDI offered a noticeable improvement in performance and refinement, justifying the higher price tag for many buyers. Fuel economy was considered respectable for a vehicle of its size and performance, averaging around 39.9 US mpg in combined driving. Reliability was generally good, although, like all modern diesel engines, it could be susceptible to issues with the diesel particulate filter (DPF) if not driven on longer journeys periodically.
Legacy
The Audi A6 Avant (4G, C7) 3.0 TDI V6 clean diesel quattro S tronic remains a desirable used car today. The 3.0 TDI engine is known for its durability and relatively straightforward maintenance, although preventative maintenance, particularly regarding the DPF and turbocharger, is crucial. The S tronic transmission, while generally reliable, may require servicing at higher mileages. These vehicles offer a compelling combination of luxury, practicality, and performance, making them a popular choice for buyers seeking a premium wagon. The availability of parts and qualified mechanics ensures that these vehicles can be kept on the road for many years to come.
