The Audi A6 Sedan (4G, C7 facelift) 2.0 TDI ultra, produced from 2014 to 2016, represented a key variant within Audi’s mid-size executive car lineup. Positioned as a fuel-efficient option, it aimed to balance performance with economy in the highly competitive European market. This model was part of the C7 generation’s facelift, incorporating updated styling and technology. The “ultra” designation signified Audi’s efforts to reduce weight and improve efficiency across the range. It served as a bridge between the more powerful TDI variants and the entry-level petrol engines, appealing to drivers prioritizing lower running costs without sacrificing the A6’s inherent refinement.
Technical Specifications
| Brand | Audi |
| Model | A6 |
| Generation | A6 Sedan (4G, C7 facelift 2014) |
| Type (Engine) | 2.0 TDI ultra (150 Hp) |
| Start of production | 2014 |
| End of production | 2016 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 5.1 l/100 km (46.1 US mpg, 55.4 UK mpg, 19.6 km/l) |
| Fuel consumption (extra urban) | 3.8 l/100 km (61.9 US mpg, 74.3 UK mpg, 26.3 km/l) |
| Fuel consumption (combined) | 4.3 l/100 km (54.7 US mpg, 65.7 UK mpg, 23.3 km/l) |
| CO2 emissions | 112 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 9.5 sec |
| Acceleration 0 – 62 mph | 9.5 sec |
| Acceleration 0 – 60 mph | 9 sec |
| Maximum speed | 214 km/h (132.97 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 10.8 kg/Hp, 92.3 Hp/tonne |
| Weight-to-torque ratio | 4.6 kg/Nm, 215.4 Nm/tonne |
| Power | 150 Hp @ 3000-4200 rpm |
| Power per litre | 76.2 Hp/l |
| Torque | 350 Nm @ 1500-3000 rpm (258.15 lb.-ft. @ 1500-3000 rpm) |
| Maximum engine speed | 4500 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | CSUD, DDCB |
| Engine displacement | 1968 cm3 (120.09 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 81 mm (3.19 in.) |
| Piston Stroke | 95.5 mm (3.76 in.) |
| Compression ratio | 16.2:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 4.7 l (4.97 US qt | 4.14 UK qt) |
| Coolant | 12 l (12.68 US qt | 10.56 UK qt) |
| Kerb Weight | 1625 kg (3582.51 lbs.) |
| Max. weight | 2205 kg (4861.19 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%) | 1900 kg (4188.78 lbs.) |
| Permitted trailer load with brakes (12%) | 1700 kg (3747.86 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) | 0.26 |
| 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 | 6 gears, manual transmission |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent on trapezoidal lever |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| 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 Sedan (4G, C7 facelift) 2.0 TDI ultra, launched in 2014, was a significant offering in Audi’s A6 range. Built on the 4G platform, which underpinned the C7 generation, this variant focused on maximizing fuel efficiency without completely sacrificing the driving experience associated with the A6. The “ultra” badge denoted a series of weight-saving measures and engine optimizations. This model was primarily aimed at the European market, where diesel engines and fuel economy are highly valued. It slotted into the lineup below the more powerful 3.0 TDI and petrol variants, offering a more accessible price point for buyers prioritizing running costs.
Powertrain & Engine Architecture
At the heart of the A6 2.0 TDI ultra lies the 1968cc inline-four cylinder diesel engine, identified by engine codes CSUD or DDCB. This engine 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 a Dual Overhead Camshaft (DOHC) configuration with four valves per cylinder, enhancing breathing and efficiency. The 6-speed manual transmission was standard, chosen for its efficiency and driver engagement. The engine’s design prioritized low-end torque, making it suitable for everyday driving and long-distance cruising. Audi implemented various “ultra” technologies, including lightweight materials in engine components and optimized engine mapping, to reduce friction and improve fuel economy.
Driving Characteristics
The 150 horsepower and 350 Nm (258 lb-ft) of torque delivered by the 2.0 TDI ultra engine provided adequate performance for most driving situations. Acceleration from 0-100 km/h (0-62 mph) took approximately 9.5 seconds, and the car reached a top speed of 214 km/h (133 mph). While not as quick as the higher-powered TDI variants, the 2.0 TDI ultra offered a smooth and refined driving experience. The manual transmission’s gear ratios were tuned for fuel efficiency, with taller gearing in higher gears for relaxed highway cruising. Compared to the 3.0 TDI, the 2.0 TDI ultra felt less urgent in acceleration, but its lighter weight and efficient engine contributed to significantly better fuel economy. The front-wheel-drive configuration provided good traction in most conditions, although it lacked the all-weather capability of Audi’s quattro all-wheel-drive system.
Equipment & Trim Levels
The A6 2.0 TDI ultra typically came well-equipped, reflecting Audi’s commitment to luxury and technology. Standard features included automatic climate control, a multi-function steering wheel, an infotainment system with a color display, and electric windows. Upholstery was typically cloth, although leather options were available. Optional extras included a navigation system, upgraded sound system, parking sensors, and a sunroof. The interior design was characterized by Audi’s clean and minimalist aesthetic, with high-quality materials and a focus on ergonomics. Trim levels varied slightly depending on the market, but generally offered a range of customization options to suit individual preferences.
Chassis & Braking
The A6 2.0 TDI ultra featured independent suspension on all four wheels, providing a comfortable and controlled ride. The front suspension utilized a multi-link setup, while the rear employed a trapezoidal link design. Ventilated disc brakes were fitted to the front wheels, providing strong stopping power, while solid discs were used at the rear to keep weight down. Anti-lock Braking System (ABS) was standard, enhancing safety and stability. The suspension tuning was geared towards comfort and refinement, prioritizing a smooth ride over sporty handling. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The Audi A6 2.0 TDI ultra was generally well-received by automotive critics, who praised its fuel efficiency and comfortable ride. It was seen as a practical and sensible choice for drivers covering long distances or prioritizing low running costs. Compared to the 3.0 TDI, the 2.0 TDI ultra offered significantly better fuel economy, although it lacked the same level of performance. Against competitors like the BMW 520d and Mercedes-Benz E200 CDI, the A6 2.0 TDI ultra held its own in terms of refinement, technology, and fuel efficiency. Some critics noted that the manual transmission felt slightly notchy, and that the engine could be a bit noisy under hard acceleration.
Legacy
The 2.0 TDI ultra engine proved to be a reliable and durable powertrain. While diesel engines, in general, have faced increased scrutiny in recent years, the A6 2.0 TDI ultra remains a popular choice in the used car market, particularly for those seeking a fuel-efficient and comfortable executive car. Regular maintenance, including oil changes and filter replacements, is crucial for ensuring long-term reliability. The engine’s common rail injection system and turbocharger are potential areas for future maintenance, but are generally robust when properly cared for. The A6 2.0 TDI ultra represents a significant step in Audi’s efforts to improve fuel efficiency and reduce emissions, and it continues to offer a compelling combination of practicality, refinement, and economy.
