The Audi A6 Sedan (4G, C7 facelift) equipped with the 3.0 TDI V6 clean diesel engine and S tronic transmission represents a significant iteration of Audi’s mid-size executive car. Produced from 2014 to 2016, this variant occupied a premium position within the C7 facelift range, offering a blend of performance, efficiency, and luxury. It was primarily marketed in Europe and other regions where diesel engines were favored, serving as a competitor to BMW’s 5 Series and Mercedes-Benz’s E-Class. This specific configuration aimed to deliver a refined driving experience with strong torque and responsive acceleration, packaged within Audi’s typically understated and sophisticated design language.
Technical Specifications
| Brand | Audi |
| Model | A6 |
| Generation | A6 Sedan (4G, C7 facelift 2014) |
| Type (Engine) | 3.0 TDI V6 clean diesel (218 Hp) 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) | 5.5 l/100 km (42.8 US mpg, 51.4 UK mpg, 18.2 km/l) |
| Fuel consumption (extra urban) | 4.3 l/100 km (54.7 US mpg, 65.7 UK mpg, 23.3 km/l) |
| Fuel consumption (combined) | 4.7 l/100 km (50 US mpg, 60.1 UK mpg, 21.3 km/l) |
| CO2 emissions | 122 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.1 sec |
| Acceleration 0 – 62 mph | 7.1 sec |
| Acceleration 0 – 60 mph | 6.7 sec |
| Maximum speed | 244 km/h (151.61 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 7.8 kg/Hp, 128.6 Hp/tonne |
| Weight-to-torque ratio | 4.2 kg/Nm, 236 Nm/tonne |
| Power | 218 Hp @ 4000-4750 rpm |
| Power per litre | 73.5 Hp/l |
| Torque | 400 Nm @ 1250-3750 rpm (295.02 lb.-ft. @ 1250-3750 rpm) |
| Maximum engine speed | 5000 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | CRTE, CTCC |
| 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 | 1695 kg (3736.84 lbs.) |
| Max. weight | 2275 kg (5015.52 lbs.) |
| Max load | 580 kg (1278.68 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) | 0.27 |
| Minimum turning circle (turning diameter) | 11.9 m (39.04 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| 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 with the S tronic transmission, produced between 2014 and 2016, represents a refined and technologically advanced offering in the executive sedan segment. This version falls within the C7 facelift generation, which brought styling updates, improved efficiency, and enhanced technology compared to the original C7 models. Positioned as a mid-to-high-range trim, it catered to buyers seeking a balance between performance, fuel economy, and luxury features. The ‘clean diesel’ designation highlighted Audi’s efforts to meet increasingly stringent emissions standards in Europe.
Powertrain & Engine Architecture
At the heart of this A6 variant lies the 3.0-liter V6 TDI engine, specifically utilizing the CRTE or CTCC engine codes depending on the exact production date and market. This engine is a turbocharged diesel, employing a common rail direct injection system for precise fuel delivery. The engine benefits from an intercooler to enhance intake air density, boosting power output. The valvetrain utilizes a Double Overhead Camshaft (DOHC) configuration with four valves per cylinder, optimizing gas flow for improved efficiency and performance. The S tronic transmission is a seven-speed dual-clutch transmission (DCT) known for its rapid and smooth gear changes. This transmission offers both automatic and manual shifting modes, providing the driver with greater control. The S tronic’s quick shifts contribute significantly to the car’s responsive driving feel.
Driving Characteristics
The 3.0 TDI with the S tronic transmission delivers a compelling driving experience. The engine’s 400 Nm (295 lb-ft) of torque, available from a low 1250 rpm, provides strong acceleration and effortless cruising. The S tronic transmission complements this torque delivery with quick and seamless gear changes, resulting in a 0-60 mph time of around 6.7 seconds. Compared to the base 1.8 TFSI models, the 3.0 TDI offers significantly more power and torque, resulting in a more confident and relaxed driving experience, particularly when overtaking or carrying a full load. While not as overtly sporty as the S6 variant, the 3.0 TDI provides ample performance for most drivers. The gear ratios in the S tronic are tuned for a balance between acceleration and fuel efficiency, with higher gears optimized for highway cruising.
Equipment & Trim Levels
The 3.0 TDI S tronic A6 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. Common options included navigation, a premium sound system (often Bang & Olufsen), adaptive cruise control, and parking assistance systems. Interior trim levels varied, with options for wood or aluminum inlays. Exterior features often included 17-inch alloy wheels, although larger sizes were available as options. The overall interior ambiance was one of understated luxury and high-quality materials.
Chassis & Braking
The A6 C7 facelift features an independent suspension system on both the front and rear axles. The front suspension utilizes a multi-link setup, while the rear employs a trapezoidal link design. This configuration provides a comfortable ride while maintaining good handling characteristics. Braking duties are handled by ventilated discs on all four wheels, providing ample stopping power. Anti-lock Braking System (ABS) is standard, enhancing safety and control during emergency braking situations. The steering system is a rack and pinion type with electric power assistance, offering precise and responsive steering feel.
Market Reception & Comparison
The Audi A6 3.0 TDI 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 50 US mpg. Compared to the 2.0 TDI variants, the 3.0 TDI offered a noticeable performance upgrade, albeit at a higher price point. The 3.0 TDI also provided a more refined and quieter driving experience than the petrol-powered 1.8 TFSI and 2.0 TFSI models. Reliability was generally good, although, like all modern diesel engines, it was susceptible to issues with the diesel particulate filter (DPF) if not driven on longer journeys regularly.
Legacy
The 3.0 TDI engine, in various iterations, proved to be a robust and reliable powerplant. The S tronic transmission, while requiring more diligent maintenance than a traditional automatic, also demonstrated good long-term durability when properly serviced. In the used car market, the A6 3.0 TDI S tronic remains a popular choice for buyers seeking a comfortable, efficient, and well-equipped executive sedan. However, potential buyers should be aware of the potential for DPF issues and ensure the car has a full service history. The C7 A6, particularly this 3.0 TDI variant, represents a high point in Audi’s engineering and design, offering a compelling blend of performance, luxury, and technology.
