The Audi A6 Avant (4F, C6 facelift) 2.0 TDI with 136 horsepower, produced from 2008 to May 2011, represents a significant iteration of Audi’s popular executive wagon. This variant occupied a middle ground within the C6 facelift range, offering a balance between fuel efficiency, practicality, and reasonable performance. It was primarily marketed in Europe as a versatile family vehicle, capitalizing on the A6 Avant’s reputation for comfort and build quality. This model year benefitted from the mid-cycle refresh of the C6 platform (4F), bringing updated styling, improved technology, and refined engine options.
Technical Specifications
| Brand | Audi |
| Model | A6 |
| Generation | A6 Avant (4F,C6 facelift 2008) |
| Type (Engine) | 2.0 TDI (136 Hp) DPF |
| Start of production | 2008 |
| End of production | May, 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7 l/100 km (33.6 US mpg, 40.4 UK mpg, 14.3 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) | 5.3 l/100 km (44.4 US mpg, 53.3 UK mpg, 18.9 km/l) |
| CO2 emissions | 139 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 10.7 sec |
| Acceleration 0 – 62 mph | 10.7 sec |
| Acceleration 0 – 60 mph | 10.2 sec |
| Maximum speed | 204 km/h (126.76 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 12 kg/Hp, 83.2 Hp/tonne |
| Weight-to-torque ratio | 5.1 kg/Nm, 195.7 Nm/tonne |
| Power | 136 Hp @ 4000 rpm |
| Power per litre | 69.1 Hp/l |
| Torque | 320 Nm @ 1750-2500 rpm (236.02 lb.-ft. @ 1750-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | CAGB |
| 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 | 18:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 4.3 l (4.54 US qt | 3.78 UK qt) |
| Kerb Weight | 1635 kg (3604.56 lbs.) |
| Max. weight | 2265 kg (4993.47 lbs.) |
| Max load | 630 kg (1388.91 lbs.) |
| Trunk (boot) space – minimum | 565 l (19.95 cu. ft.) |
| Trunk (boot) space – maximum | 1660 l (58.62 cu. ft.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (8%) | 1700 kg (3747.86 lbs.) |
| Permitted trailer load with brakes (12%) | 1500 kg (3306.93 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 85 kg (187.39 lbs.) |
| Length | 4927 mm (193.98 in.) |
| Width | 1855 mm (73.03 in.) |
| Height | 1463 mm (57.6 in.) |
| Wheelbase | 2843 mm (111.93 in.) |
| Front track | 1612 mm (63.46 in.) |
| Rear (Back) track | 1618 mm (63.7 in.) |
| Drag coefficient (Cd) | 0.31 |
| 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 |
| Tires size | 205/60 R16 |
| Wheel rims size | 7J x 16 |
Powertrain & Engine Architecture
The heart of this A6 Avant is the 2.0-liter inline-four cylinder diesel engine, designated CAGB. This engine is a member of the Volkswagen Group’s common rail TDI family, known for its efficiency and refinement. The CAGB utilizes a turbocharger with an intercooler to boost power output to 136 horsepower and 320 Nm (236 lb-ft) of torque. The common rail direct injection system, operating at 1800 bar, ensures precise fuel delivery and contributes to reduced emissions. The engine features a double overhead camshaft (DOHC) valvetrain with four valves per cylinder. The engine is longitudinally mounted in the front of the vehicle, driving the front wheels. The transmission is a six-speed manual gearbox, offering a good balance between fuel economy and driver control. While an automatic transmission was available on other A6 variants, it wasn’t commonly paired with this specific engine and power output.
Driving Characteristics
The 2.0 TDI 136 hp A6 Avant delivers a comfortable and composed driving experience. Acceleration from 0-60 mph takes around 10.2 seconds, which is adequate for everyday driving but doesn’t offer particularly sporty performance. The engine’s torque peak, available from 1750-2500 rpm, provides good responsiveness in most driving situations. The six-speed manual transmission allows for precise gear selection, and the gear ratios are well-matched to the engine’s powerband. Compared to the more powerful 2.7 TDI or 3.0 TDI variants, this 2.0 TDI feels less urgent, but it compensates with significantly better fuel economy. The front-wheel-drive configuration provides predictable handling, although it can exhibit some understeer when pushed hard.
Equipment & Trim Levels
The 2.0 TDI 136 hp A6 Avant typically came equipped with a respectable level of standard features. These included automatic climate control, a multi-function steering wheel, electric windows, and an audio system with CD player. Higher trim levels, such as SE or S-line, added features like leather upholstery, alloy wheels, parking sensors, and upgraded audio systems. Optional extras included a sunroof, navigation system, and advanced driver assistance systems. Interior upholstery was typically cloth, with leather available as an upgrade. The dashboard layout was typical of the C6 A6, featuring a clean and functional design.
Chassis & Braking
The A6 Avant’s chassis features independent multi-link suspension at the front and an independent trapezoidal lever suspension at the rear, providing a comfortable ride and good handling characteristics. The front brakes are ventilated discs, while the rear brakes are solid discs. Anti-lock Braking System (ABS) is standard. The suspension is tuned for comfort, prioritizing ride quality over outright sportiness. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The A6 Avant 2.0 TDI 136 hp was well-received in the European market as a practical and economical family car. Critics praised its comfortable ride, spacious interior, and fuel efficiency. However, some reviewers noted that the engine lacked the outright performance of the larger TDI engines. Compared to the 2.7 TDI, the 2.0 TDI offered significantly better fuel economy but less power and refinement. Compared to the petrol-powered A6 variants, the 2.0 TDI provided superior fuel economy and torque, making it a more sensible choice for long-distance driving.
Legacy
The CAGB engine, while generally reliable, is known to be susceptible to issues with the diesel particulate filter (DPF) if not properly maintained. Regular servicing and the use of high-quality diesel fuel are crucial for ensuring the longevity of the DPF. The A6 Avant 2.0 TDI 136 hp remains a popular choice on the used car market, offering a good balance of practicality, comfort, and affordability. Its relatively simple mechanicals and readily available parts make it a relatively easy car to maintain. However, potential buyers should be aware of the potential DPF issues and ensure that the vehicle has been properly serviced.
