The Audi A6 Sedan (4G, C7 facelift) 3.0 TDI V6 quattro S tronic represents a refined iteration of Audi’s mid-size executive car, produced from 2014 to 2016. This variant, powered by a potent clean diesel engine, occupied a premium position within the A6 lineup, offering a blend of performance, efficiency, and luxury. It was primarily marketed in Europe and other regions with strong diesel acceptance, serving as a flagship model for technology and driving experience within the C7 generation.
Technical Specifications
| Brand | Audi |
| Model | A6 |
| Generation | A6 Sedan (4G, C7 facelift 2014) |
| Type (Engine) | 3.0 TDI V6 clean diesel (272 Hp) quattro S tronic |
| Start of production | 2014 |
| End of production | 2016 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 5.9 l/100 km (39.9 US mpg, 47.9 UK mpg, 16.9 km/l) |
| Fuel consumption (extra urban) | 4.6 l/100 km (51.1 US mpg, 61.4 UK mpg, 21.7 km/l) |
| Fuel consumption (combined) | 5.1 l/100 km (46.1 US mpg, 55.4 UK mpg, 19.6 km/l) |
| CO2 emissions | 133 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 5.5 sec |
| Acceleration 0 – 62 mph | 5.5 sec |
| Acceleration 0 – 60 mph | 5.2 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 6.5 kg/Hp, 153.7 Hp/tonne |
| Weight-to-torque ratio | 3.1 kg/Nm, 327.7 Nm/tonne |
| Power | 272 Hp @ 3500-4250 rpm |
| Power per litre | 91.7 Hp/l |
| Torque | 580 Nm @ 1500-3250 rpm (427.79 lb.-ft. @ 1500-3250 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | CRTD |
| 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 | 16:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.1 l (6.45 US qt | 5.37 UK qt) |
| Coolant | 11.5 l (12.15 US qt | 10.12 UK qt) |
| Kerb Weight | 1770 kg (3902.18 lbs.) |
| Max. weight | 2380 kg (5247 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 | 73 l (19.28 US gal | 16.06 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (8%) | 2100 kg (4629.71 lbs.) |
| Permitted trailer load with brakes (12%) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 85 kg (187.39 lbs.) |
| Length | 4933 mm (194.21 in.) |
| Width | 1874 mm (73.78 in.) |
| Width including mirrors | 2086 mm (82.13 in.) |
| Height | 1455-1468 mm (57.28 – 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 | 930 mm (36.61 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 | 8.0J x 17 |
INTRODUCTION
The Audi A6 Sedan (4G, C7 facelift) 3.0 TDI V6 quattro S tronic, introduced in 2014, represented a significant upgrade to the already successful C7 generation A6. Positioned as a premium offering, it catered to buyers seeking a balance of performance, efficiency, and all-weather capability. The “facelift” brought revised styling, updated technology, and refined engine options. This particular variant, with its 3.0-liter TDI engine and S tronic dual-clutch transmission, was a popular choice in European markets where diesel engines were favored for their fuel economy and torque. It sat near the top of the A6 range, below the more powerful 4.0 TDI and the performance-oriented S6 models.
Powertrain & Engine Architecture
At the heart of this A6 variant lies the CRTD engine, a 3.0-liter V6 turbodiesel. This engine is a member of Audi’s modular engine family, known for its robust construction and advanced technology. The CRTD utilizes a common rail direct injection system, delivering fuel at extremely high pressure for optimized combustion. The engine employs a single turbocharger with an intercooler to boost power and efficiency. The valvetrain features double overhead camshafts (DOHC) and four valves per cylinder, contributing to its strong performance across the rev range. The S tronic 7-speed dual-clutch transmission is a key component, offering incredibly fast and smooth gear changes. This transmission features two separate clutches, one for odd gears and one for even gears, allowing for pre-selection of the next gear and eliminating torque interruption during shifts. The quattro all-wheel-drive system distributes power between the front and rear axles as needed, providing excellent traction and stability in all conditions.
Driving Characteristics
The 3.0 TDI with the S tronic transmission delivers a remarkably refined driving experience. The engine produces a substantial 580 Nm (427.79 lb-ft) of torque, available from a low 1500 rpm, providing effortless acceleration and strong pulling power. The S tronic transmission complements the engine perfectly, offering quick and seamless gear changes, whether in automatic or manual mode. Acceleration from 0 to 60 mph takes approximately 5.2 seconds, making it a genuinely quick sedan. Compared to the lower-powered 1.8 TFSI or 2.0 TDI variants, the 3.0 TDI offers significantly more performance 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 power for spirited driving. The gear ratios are tuned for a balance of acceleration and fuel efficiency, with taller gears for comfortable 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 navigation, a premium sound system (Bang & Olufsen), adaptive cruise control, parking assistance, and various driver assistance systems. Interior trim options ranged from wood veneers to brushed aluminum, allowing buyers to personalize the cabin. Exterior features typically included alloy wheels, xenon headlights, and chrome accents.
Chassis & Braking
The A6 C7 featured a sophisticated chassis designed for both comfort and handling. The front suspension utilized an independent multi-link setup, while the rear employed an independent trapezoidal link design. This configuration provided a smooth ride and precise handling. The 3.0 TDI variant typically came equipped with ventilated disc brakes on all four wheels, providing ample stopping power. ABS (Anti-lock Braking System) was standard, along with electronic stability control. The steering system was a rack-and-pinion setup with electric power assistance, 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 high-quality interior. Fuel economy was also a strong point, with combined figures around 5.1 l/100 km (46.1 US mpg). Compared to the 2.0 TDI, the 3.0 TDI offered significantly more power and refinement, albeit at a higher price point. The 3.0 TDI also offered a more compelling alternative to BMW’s 530d and Mercedes-Benz’s E350 CDI, providing a similar level of performance and luxury. Reliability was generally good, although diesel particulate filter (DPF) issues could occur with infrequent long-distance driving.
Legacy
The 3.0 TDI engine proved to be a durable and reliable powerplant when properly maintained. The S tronic transmission, while complex, also demonstrated good longevity with regular servicing. In the used car market, the A6 3.0 TDI quattro S tronic remains a popular choice, offering a compelling combination of performance, efficiency, and luxury at a relatively affordable price. However, potential buyers should be aware of the potential for DPF issues and ensure that the vehicle has been regularly serviced. The C7 A6, and particularly this 3.0 TDI variant, cemented Audi’s reputation for building sophisticated and well-engineered executive cars.
