The Audi A6 Avant (4G, C7 facelift) 2.0 TDI ultra, produced from 2014 to 2016, represents a significant iteration of Audi’s popular executive wagon. Positioned as a fuel-efficient option within the C7 facelift range, this variant aimed to balance practicality, comfort, and economy. It slotted into the A6 Avant lineup below the more powerful TDI variants and the petrol-powered engines, targeting buyers prioritizing lower running costs without sacrificing the A6’s inherent refinement. The “ultra” designation signified Audi’s efforts to reduce weight and optimize efficiency across the model.
Technical Specifications
| Brand | Audi |
| Model | A6 |
| Generation | A6 Avant (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 | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 5.3 l/100 km (44.4 US mpg, 53.3 UK mpg, 18.9 km/l) |
| Fuel consumption (extra urban) | 4 l/100 km (58.8 US mpg, 70.6 UK mpg, 25 km/l) |
| Fuel consumption (combined) | 4.5 l/100 km (52.3 US mpg, 62.8 UK mpg, 22.2 km/l) |
| CO2 emissions | 117 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 9.8 sec |
| Acceleration 0 – 62 mph | 9.8 sec |
| Acceleration 0 – 60 mph | 9.3 sec |
| Maximum speed | 209 km/h (129.87 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 11.3 kg/Hp, 88.2 Hp/tonne |
| Weight-to-torque ratio | 4.9 kg/Nm, 205.9 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) |
| 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 | 1700 kg (3747.86 lbs.) |
| Max. weight | 2320 kg (5114.72 lbs.) |
| Max load | 620 kg (1366.87 lbs.) |
| Trunk (boot) space – minimum | 565 l (19.95 cu. ft.) |
| Trunk (boot) space – maximum | 1680 l (59.33 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 | 4943 mm (194.61 in.) |
| Width | 1874 mm (73.78 in.) |
| Width including mirrors | 2086 mm (82.13 in.) |
| Height | 1461-1482 mm (57.52 – 58.35 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 | 1101 mm (43.35 in.) |
| Drag coefficient (Cd) | 0.30 |
| 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 Avant (4G, C7 facelift) 2.0 TDI ultra, launched in 2014, was a key component of Audi’s strategy to offer a wider range of efficient engine options within its popular A6 model line. The C7 generation A6, already known for its sophisticated interior and comfortable ride, received a facelift in 2014, bringing updated styling and improved technology. The 2.0 TDI ultra variant, powered by a four-cylinder diesel engine, was designed to appeal to buyers seeking lower fuel consumption and reduced emissions without compromising on the A6’s core values. This model occupied the entry-level position within the A6 Avant diesel range, offering a more affordable alternative to the more potent 3.0 TDI variants.
Powertrain & Engine Architecture
At the heart of the A6 Avant 2.0 TDI ultra lies the Volkswagen Group’s 2.0-liter four-cylinder diesel engine, specifically the CSUD or DDCB engine codes depending on the market. This engine is a turbocharged, common-rail direct injection diesel, known for its balance of performance and efficiency. The engine utilizes a single turbocharger with variable geometry turbine (VGT) technology to optimize boost across the rev range. The common-rail injection system, operating at very high pressures, ensures precise fuel delivery and efficient combustion. The engine features a Dual Overhead Camshaft (DOHC) valvetrain with four valves per cylinder, contributing to its breathing efficiency. The 6-speed manual transmission was standard, chosen for its efficiency and driver engagement. While an S tronic dual-clutch transmission was available on other A6 variants, it wasn’t typically paired with this specific ultra engine due to cost considerations and the focus on maximizing fuel economy.
Driving Characteristics
The 150 horsepower and 350 Nm (258 lb-ft) of torque produced by the 2.0 TDI ultra engine provide adequate performance for everyday driving. Acceleration from 0-60 mph takes around 9.3 seconds, and top speed is rated at 209 km/h (129.87 mph). However, it’s not a particularly sporty configuration. The engine feels most comfortable in the mid-range, delivering a usable surge of torque for overtaking maneuvers. The manual transmission, while engaging, requires frequent shifting to maintain optimal power delivery. Compared to the more powerful 3.0 TDI variants, the 2.0 TDI ultra feels noticeably less responsive, particularly at higher speeds. The gear ratios are tuned for fuel efficiency rather than outright acceleration. The front-wheel-drive configuration contributes to a slight tendency for understeer during spirited driving.
Equipment & Trim Levels
The A6 Avant 2.0 TDI ultra typically came well-equipped, reflecting Audi’s commitment to providing a premium experience. Standard features included Audi’s MMI infotainment system with a central display screen, automatic climate control, alloy wheels, and a leather-wrapped steering wheel. Safety features such as ABS, electronic stability control, and multiple airbags were also standard. Optional extras included features like navigation, upgraded sound systems, leather upholstery, parking sensors, and advanced driver assistance systems like adaptive cruise control. Trim levels varied by market, but generally, the “ultra” designation indicated a focus on efficiency and value, with a slightly more restrained interior compared to higher-spec A6 variants.
Chassis & Braking
The A6 Avant 2.0 TDI ultra utilizes a sophisticated chassis design, featuring independent multi-link suspension at the front and an independent trapezoidal link suspension at the rear. This setup provides a comfortable ride and good handling characteristics. The front brakes are ventilated discs, while the rear brakes are solid discs. ABS (Anti-lock Braking System) is standard, ensuring safe and controlled braking in various conditions. The suspension tuning is geared towards comfort, prioritizing ride quality over outright sportiness. Stabilizer bars are fitted front and rear to reduce body roll during cornering.
Market Reception & Comparison
The A6 Avant 2.0 TDI ultra was generally well-received by automotive critics as a practical and efficient option within the executive wagon segment. Reviewers praised its fuel economy and comfortable ride, but some noted its lack of outright performance compared to more powerful A6 variants. Compared to the 3.0 TDI models, the 2.0 TDI ultra offered significantly better fuel economy but at the expense of acceleration and refinement. Against competitors like the BMW 5 Series Touring and Mercedes-Benz E-Class Estate, the A6 Avant 2.0 TDI ultra held its own in terms of practicality, technology, and overall quality.
Legacy
The 2.0 TDI engine, in various iterations, has proven to be a reliable and durable powertrain. However, like all modern diesel engines, it’s susceptible to issues related to the diesel particulate filter (DPF) if not properly maintained with regular long journeys. The A6 Avant 2.0 TDI ultra remains a popular choice in the used car market, particularly for buyers seeking a spacious, comfortable, and fuel-efficient wagon. Its relatively simple mechanicals and readily available parts contribute to its ongoing appeal. While not the most exciting A6 variant, it represents a sensible and well-rounded option for those prioritizing practicality and economy.


