The Audi A6 Sedan (4G, C7 facelift) 3.0 TDI V6 quattro Tiptronic, produced from 2015 to 2016, represents a refined iteration of Audi’s mid-size executive car. This variant occupied a premium position within the C7 facelift range, offering a blend of performance, luxury, and all-weather capability. It was positioned above the 2.0 TDI models and below the performance-oriented S6, targeting buyers seeking a powerful and comfortable grand tourer. The C7 facelift brought updated styling, improved technology, and enhanced efficiency to the A6 lineup, solidifying its position as a strong competitor in the executive sedan segment.
Technical Specifications
| Brand | Audi |
| Model | A6 |
| Generation | A6 Sedan (4G, C7 facelift 2014) |
| Type (Engine) | 3.0 TDI V6 (240 Hp) quattro Tiptronic |
| Start of production | 2015 |
| End of production | 2016 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – urban (EPA) | 9.4 l/100 km (25 US mpg, 30.1 UK mpg, 10.6 km/l) |
| Fuel consumption (economy) – extra urban (EPA) | 6.2 l/100 km (37.9 US mpg, 45.6 UK mpg, 16.1 km/l) |
| Fuel consumption (economy) – combined (EPA) | 8.1 l/100 km (29 US mpg, 34.9 UK mpg, 12.3 km/l) |
| Fuel Type | Diesel |
| Acceleration 0 – 60 mph | 5.5 sec |
| Maximum speed | 209 km/h (129.87 mph), Electronically limited |
| Emission standard | ULEV 2 |
| Weight-to-power ratio | 8.1 kg/Hp, 123.7 Hp/tonne |
| Weight-to-torque ratio | 3.3 kg/Nm, 299 Nm/tonne |
| Power | 240 Hp @ 3500-3750 rpm |
| Power per litre | 80.9 Hp/l |
| Torque | 580 Nm @ 1750-2250 rpm (427.79 lb.-ft. @ 1750-2250 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | CPNB |
| 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 | 1940 kg (4276.97 lbs.) |
| Trunk (boot) space – minimum | 530 l (18.72 cu. ft.) |
| Trunk (boot) space – maximum | 995 l (35.14 cu. ft.) |
| Fuel tank capacity | 73 l (19.28 US gal | 16.06 UK gal) |
| AdBlue tank | 19 l (5.02 US gal | 4.18 UK gal) |
| Length | 4932 mm (194.17 in.) |
| Width | 1875 mm (73.82 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.) |
| Drag coefficient (Cd) | 0.28 |
| Minimum turning circle (turning diameter) | 11.9 m (39.04 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 | 8 gears, automatic transmission Tiptronic |
| Front suspension | Coil spring, Independent multi-link suspension, Transverse stabilizer |
| Rear suspension | Independent on trapezoidal lever, Transverse stabilizer, Coil spring |
| Front brakes | Ventilated discs, 345 mm |
| Rear brakes | Ventilated discs, 330 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 245/45 R18; 255/40 R19; 255/35 R20 |
| Wheel rims size | 8J x 18; 8.5J x 19; 8.5J x 20 |
Powertrain & Engine Architecture
At the heart of the A6 3.0 TDI quattro Tiptronic lies the CPNB engine, 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. The CPNB 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 while managing exhaust gas temperatures. The valvetrain employs double overhead camshafts (DOHC) with four valves per cylinder, contributing to efficient gas exchange. Paired with this engine is Audi’s 8-speed Tiptronic automatic transmission. This transmission offers smooth and quick shifts, and allows the driver to manually select gears for greater control. The Tiptronic transmission is known for its durability and ability to handle the engine’s substantial torque output.
Driving Characteristics
The 240 horsepower and 427.79 lb.-ft. of torque produced by the 3.0 TDI engine provide brisk acceleration. The 0-60 mph sprint takes approximately 5.5 seconds, making it a genuinely quick executive sedan. The Tiptronic transmission is well-matched to the engine’s characteristics, providing seamless gear changes and responsive performance. Compared to the 2.0 TDI models, the 3.0 TDI offers significantly more power and torque, resulting in effortless cruising and confident overtaking. While not as overtly sporty as the S6, the 3.0 TDI provides a satisfying driving experience, balancing performance with comfort. The quattro all-wheel-drive system ensures excellent traction in all weather conditions, enhancing stability and control. The gear ratios are tuned for a balance between acceleration and fuel efficiency, with higher gears optimized for relaxed highway cruising.
Equipment & Trim Levels
The A6 3.0 TDI quattro Tiptronic 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, a premium sound system (Bang & Olufsen), adaptive cruise control, and parking assistance systems. Interior trim options varied, with choices in wood or aluminum accents. The exterior could be customized with different wheel designs and paint colors.
Chassis & Braking
The A6 3.0 TDI features a sophisticated chassis designed for both comfort and handling. The front suspension utilizes a multi-link setup with a transverse stabilizer, while the rear suspension employs an independent trapezoidal link design, also with a stabilizer bar. This configuration provides a smooth ride and precise handling. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. The front brakes measure 345mm in diameter, while the rear brakes are 330mm. ABS (Anti-lock Braking System) is standard, enhancing braking performance and stability.
Market Reception & Comparison
The Audi A6 3.0 TDI quattro Tiptronic was generally well-received by automotive critics. It was praised for its powerful engine, refined ride, and luxurious interior. Fuel economy was also considered competitive for its class, achieving around 29 US mpg in combined driving. Compared to other trims in the A6 lineup, the 3.0 TDI offered a significant performance upgrade over the 2.0 TDI models, but at a higher price point. It provided a compelling alternative to rivals such as the BMW 535d and the Mercedes-Benz E350 CDI.
Legacy
The CPNB engine, when properly maintained, has proven to be a durable and reliable powertrain. However, like all modern diesel engines, it is susceptible to issues related to the diesel particulate filter (DPF) and the AdBlue system if not used on longer journeys regularly. In the used car market, the A6 3.0 TDI quattro Tiptronic remains a desirable option for buyers seeking a comfortable, capable, and relatively fuel-efficient executive sedan. Maintenance costs can be higher than those of the 2.0 TDI models due to the more complex engine and drivetrain, but the added performance and refinement often justify the expense for discerning buyers.
