The Audi A4 (B8 8K) 2.0 TDI quattro, produced from May 2008 to 2011, represented a significant iteration of Audi’s popular executive sedan. This variant, equipped with a 2.0-liter turbocharged diesel engine producing 143 horsepower and paired with a six-speed manual transmission, occupied a key position in the A4 lineup, offering a balance between performance, fuel efficiency, and all-weather capability through Audi’s renowned quattro all-wheel-drive system. It was positioned as a step up from the base-model A4s, appealing to buyers seeking enhanced traction and a more refined driving experience without the higher cost of the more powerful engine options.
Technical Specifications
| Brand | Audi |
| Model | A4 |
| Generation | A4 (B8 8K) |
| Type (Engine) | 2.0 TDI (143 Hp) quattro |
| Start of production | May, 2008 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 7.6 l/100 km (30.9 US mpg, 37.2 UK mpg, 13.2 km/l) |
| Fuel consumption (extra urban) | 4.9 l/100 km (48 US mpg, 57.6 UK mpg, 20.4 km/l) |
| Fuel consumption (combined) | 5.9 l/100 km (39.9 US mpg, 47.9 UK mpg, 16.9 km/l) |
| CO2 emissions | 155 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 9.3 sec |
| Acceleration 0 – 62 mph | 9.3 sec |
| Acceleration 0 – 60 mph | 8.8 sec |
| Maximum speed | 215 km/h (133.59 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 10.9 kg/Hp, 92 Hp/tonne |
| Weight-to-torque ratio | 4.9 kg/Nm, 205.8 Nm/tonne |
| Power | 143 Hp @ 4200 rpm |
| Power per litre | 72.7 Hp/l |
| Torque | 320 Nm @ 1750-2500 rpm (236.02 lb.-ft. @ 1750-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | EA189 / CAGA |
| 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 | 16.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 5 l (5.28 US qt | 4.4 UK qt) |
| Coolant | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Kerb Weight | 1555 kg (3428.19 lbs.) |
| Max. weight | 2105 kg (4640.73 lbs.) |
| Max load | 550 kg (1212.54 lbs.) |
| Trunk (boot) space – minimum | 480 l (16.95 cu. ft.) |
| Trunk (boot) space – maximum | 962 l (33.97 cu. ft.) |
| Fuel tank capacity | 64 l (16.91 US gal | 14.08 UK gal) |
| Max. roof load | 90 kg (198.42 lbs.) |
| Permitted trailer load with brakes (8%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load with brakes (12%) | 1600 kg (3527.4 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 80 kg (176.37 lbs.) |
| Length | 4703 mm (185.16 in.) |
| Width | 1826 mm (71.89 in.) |
| Height | 1427 mm (56.18 in.) |
| Wheelbase | 2808 mm (110.55 in.) |
| Front track | 1564 mm (61.57 in.) |
| Rear (Back) track | 1551 mm (61.06 in.) |
| Drag coefficient (Cd) | 0.280 |
| Minimum turning circle (turning diameter) | 11.5 m (37.73 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives permanently the four wheels of the vehicle. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| 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 | 205/60 R16 |
| Wheel rims size | 7J x 16 |
Powertrain & Engine Architecture
The heart of the A4 2.0 TDI quattro is the EA189 series 2.0-liter inline-four diesel engine, specifically the CAGA code variant. This engine utilizes a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. A turbocharger with an intercooler is employed to boost power output and improve efficiency. The engine features a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, contributing to its responsive nature. The six-speed manual transmission provides precise gear changes and allows the driver to fully utilize the engine’s torque band. This engine was known for its relatively robust design, though later iterations of the EA189 family faced scrutiny regarding diesel emissions.
Driving Characteristics
The 2.0 TDI quattro offered a composed and refined driving experience. While not overtly sporty, the 143 horsepower and 320 Nm (236 lb-ft) of torque provided ample power for everyday driving and confident overtaking. The quattro all-wheel-drive system delivered excellent traction in various weather conditions, enhancing stability and control. The six-speed manual transmission allowed for engaging gear changes, and the engine’s torque curve meant that strong acceleration was available from relatively low engine speeds. Compared to the more powerful 170 hp or 184 hp versions of the 2.0 TDI, this variant felt slightly less urgent, but the difference was often negligible in real-world driving scenarios. The manual transmission also provided a more connected feel compared to the available S tronic dual-clutch transmission.
Equipment & Trim Levels
The A4 2.0 TDI quattro typically came equipped with a respectable level of standard features. These included air conditioning, power windows, power mirrors, a multi-function steering wheel, and an Audi Concert audio system. Interior upholstery was generally cloth, though leather options were available. Higher trim levels offered features such as automatic climate control, a sunroof, and upgraded audio systems. Optional extras included navigation, parking sensors, and heated seats. The overall interior design was typical of Audi at the time – functional, well-built, and understated.
Chassis & Braking
The B8 A4 featured an independent multi-link suspension system at both the front and rear, providing a comfortable ride and precise handling. The quattro all-wheel-drive system distributed power between the front and rear axles as needed, optimizing traction. Braking duties were handled by ventilated discs at the front and solid discs at the rear, equipped with ABS (Anti-lock Braking System). The suspension was tuned to provide a balance between comfort and handling, making it suitable for both city driving and longer journeys.
Market Reception & Comparison
The Audi A4 2.0 TDI quattro was well-received by automotive critics. It was praised for its refined driving experience, fuel efficiency, and all-weather capability. Compared to its rivals, such as the BMW 320d and Mercedes-Benz C220 CDI, the A4 offered a compelling combination of features and performance. The 2.0 TDI quattro generally achieved better fuel economy than the higher-output versions of the A4, making it an attractive option for drivers prioritizing efficiency. However, some critics noted that the interior, while well-built, lacked the visual flair of some competitors.
Legacy
The EA189 engine, while generally reliable, has been subject to recalls related to diesel emissions. However, the 2.0 TDI quattro remains a popular choice in the used car market due to its blend of practicality, performance, and all-wheel-drive capability. Regular maintenance, including oil changes and timing belt replacements, is crucial for ensuring the longevity of this powertrain. Today, well-maintained examples of the A4 2.0 TDI quattro can still provide years of reliable service, offering a comfortable and capable driving experience.
