The Audi A6 Allroad quattro (4G, C7) 3.0 TDI V6 (245 hp) quattro S tronic represents a compelling blend of luxury, performance, and all-weather capability within the fourth generation (C7) of the A6 family. Produced from 2012 to 2014, this variant occupied a niche position as the more rugged, adventure-oriented version of the A6 Avant (wagon), appealing to buyers seeking a premium estate car capable of tackling varied terrain. It built upon the success of previous Allroad models, continuing Audi’s tradition of offering sophisticated all-wheel-drive systems and increased ground clearance. This specific configuration, pairing the 3.0-liter TDI engine with the seven-speed S tronic dual-clutch transmission and quattro all-wheel drive, was a popular choice in European markets.
Technical Specifications
| Brand | Audi |
| Model | A6 |
| Generation | A6 Allroad quattro (4G, C7) |
| Type (Engine) | 3.0 TDI V6 (245 Hp) quattro S tronic |
| Start of production | 2012 |
| End of production | 2014 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate), Crossover |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7.4 l/100 km (31.8 US mpg, 38.2 UK mpg, 13.5 km/l) |
| Fuel consumption (extra urban) | 5.6 l/100 km (42 US mpg, 50.4 UK mpg, 17.9 km/l) |
| Fuel consumption (combined) | 6.3 l/100 km (37.3 US mpg, 44.8 UK mpg, 15.9 km/l) |
| CO2 emissions | 165 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.7 sec |
| Acceleration 0 – 62 mph | 6.7 sec |
| Acceleration 0 – 60 mph | 6.4 sec |
| Maximum speed | 236 km/h (146.64 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 7.7 kg/Hp, 130.3 Hp/tonne |
| Weight-to-torque ratio | 3.2 kg/Nm, 308.5 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 |
| 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 | 12 l (12.68 US qt | 10.56 UK qt) |
| Kerb Weight | 1880 kg (4144.69 lbs.) |
| Max. weight | 2530 kg (5577.7 lbs.) |
| Max load | 650 kg (1433 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 with brakes (8%) | 2500 kg (5511.56 lbs.) |
| Permitted trailer load with brakes (12%) | 2500 kg (5511.56 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 100 kg (220.46 lbs.) |
| Length | 4938 mm (194.41 in.) |
| Width | 1898 mm (74.72 in.) |
| Width including mirrors | 2086 mm (82.13 in.) |
| Height | 1452-1534 mm (57.17 – 60.39 in.) |
| Wheelbase | 2905 mm (114.37 in.) |
| Front track | 1631 mm (64.21 in.) |
| Rear (Back) track | 1596 mm (62.83 in.) |
| Front overhang | 920 mm (36.22 in.) |
| Rear overhang | 1113 mm (43.82 in.) |
| Drag coefficient (Cd) | 0.31 |
| 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 | 235/55 R18 |
| Wheel rims size | 8.0J x 18 |
Powertrain & Engine Architecture
At the heart of the A6 Allroad quattro 3.0 TDI lies the CDUC or CDUD engine code, a 3.0-liter V6 turbodiesel. This engine is a member of Audi’s modular engine family, known for its robust construction and refined operation. It utilizes a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. The engine features a single turbocharger with an intercooler, boosting power and torque. The valvetrain employs double overhead camshafts (DOHC) with four valves per cylinder, enhancing breathing and efficiency. The S tronic seven-speed dual-clutch transmission provides rapid and smooth gear changes, contributing to both performance and fuel economy. This transmission allows for both fully automatic operation and manual gear selection via steering wheel-mounted paddles.
Driving Characteristics
The 245 hp and 427.79 lb-ft of torque produced by the 3.0 TDI engine, coupled with the S tronic transmission and quattro all-wheel drive, deliver a confident and capable driving experience. Acceleration from 0-60 mph takes approximately 6.4 seconds, making it brisk for a wagon. The S tronic transmission’s quick shifts ensure minimal power interruption during acceleration. While not as overtly sporty as some of its rivals, the Allroad offers ample power for overtaking and comfortable cruising. The quattro system provides excellent traction in all weather conditions, making it a particularly appealing choice for drivers in regions with inclement weather. Compared to the base 1.8 TFSI models, the 3.0 TDI offers significantly more torque and a broader powerband, resulting in effortless performance even when fully loaded. It also provides a more refined and quieter driving experience than the higher-output, but potentially more raucous, diesel variants.
Equipment & Trim Levels
The A6 Allroad quattro 3.0 TDI 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 equipment included ABS, ESP (Electronic Stability Program), and multiple airbags. Optional extras included features like adaptive cruise control, a panoramic sunroof, advanced parking assistance systems, and upgraded sound systems. The Allroad trim also added unique exterior styling cues, such as flared wheel arches, stainless steel underbody protection, and distinctive alloy wheel designs.
Chassis & Braking
The A6 Allroad quattro features a sophisticated suspension system designed to provide both comfort and handling. The front suspension utilizes an independent multi-link setup, while the rear employs an independent trapezoidal link design. The Allroad-specific suspension also provides increased ground clearance compared to the standard A6 Avant, enhancing its off-road capability. Braking duties are handled by ventilated discs on all four wheels, providing ample stopping power. The electronic stability program (ESP) and anti-lock braking system (ABS) work in conjunction to maintain control in challenging conditions.
Market Reception & Comparison
The Audi A6 Allroad quattro 3.0 TDI was generally well-received by automotive critics. It was praised for its blend of luxury, performance, and practicality. The 3.0 TDI engine was lauded for its refinement and fuel efficiency, while the S tronic transmission was appreciated for its responsiveness. Compared to other trims in the A6 lineup, the Allroad offered a more rugged and versatile package, appealing to buyers who prioritized all-weather capability and a more adventurous lifestyle. Fuel economy was competitive for its class, averaging around 37.3 US mpg in combined driving. Reliability was generally good, although, like all modern diesels, it was susceptible to issues with the diesel particulate filter (DPF) if not driven on longer journeys regularly.
Legacy
The Audi A6 Allroad quattro (4G, C7) 3.0 TDI V6 (245 hp) quattro S tronic remains a desirable used car today. The powertrain is known for its durability, provided it has been properly maintained. The combination of a powerful diesel engine, a smooth-shifting transmission, and Audi’s renowned quattro all-wheel-drive system continues to appeal to buyers seeking a capable and comfortable estate car. While maintenance costs for a diesel of this complexity can be higher than for simpler gasoline engines, the Allroad’s overall build quality and refinement make it a compelling option in the premium used car market.
