Technical Specifications
| Brand | Audi |
| Model | A8 |
| Generation | A8 (D3, 4E, facelift 2005) |
| Type (Engine) | 3.0 TDI V6 (233 Hp) quattro DPF Tiptronic |
| Start of production | 2005 |
| End of production | 2007 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 12.1-12.3 l/100 km (19.4 – 19.1 US mpg, 23.3 – 23 UK mpg, 8.3 – 8.1 km/l) |
| Fuel consumption (extra urban) | 6.5-6.7 l/100 km (36.2 – 35.1 US mpg, 43.5 – 42.2 UK mpg, 15.4 – 14.9 km/l) |
| Fuel consumption (combined) | 8.5-8.7 l/100 km (27.7 – 27 US mpg, 33.2 – 32.5 UK mpg, 11.8 – 11.5 km/l) |
| CO2 emissions | 229-234 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.8 sec |
| Acceleration 0 – 62 mph | 7.8 sec |
| Acceleration 0 – 60 mph | 7.4 sec |
| Maximum speed | 243 km/h (150.99 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 7.9 kg/Hp, 127.3 Hp/tonne |
| Weight-to-torque ratio | 4.1 kg/Nm, 245.9 Nm/tonne |
| Power | 233 Hp @ 4000 rpm |
| Torque | 450 Nm @ 1400-3250 rpm (331.9 lb.-ft. @ 1400-3250 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | ASB |
| 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 | 17:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 8.2 l (8.66 US qt | 7.21 UK qt) |
| Coolant | 15.8 l (16.7 US qt | 13.9 UK qt) |
| Kerb Weight | 1830 kg (4034.46 lbs.) |
| Max. weight | 2430 kg (5357.23 lbs.) |
| Max load | 600 kg (1322.77 lbs.) |
| Trunk (boot) space – minimum | 500 l (17.66 cu. ft.) |
| Fuel tank capacity | 90 l (23.78 US gal | 19.8 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (8%) | 2200 kg (4850.17 lbs.) |
| Permitted trailer load with brakes (12%) | 2200 kg (4850.17 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 95 kg (209.44 lbs.) |
| Length | 5062 mm (199.29 in.) |
| Width | 1894 mm (74.57 in.) |
| Height | 1444 mm (56.85 in.) |
| Wheelbase | 2944 mm (115.91 in.) |
| Front track | 1629 mm (64.13 in.) |
| Rear (Back) track | 1615 mm (63.58 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle (turning diameter) | 12.1 m (39.7 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, automatic transmission Tiptronic |
| 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 | Hydraulic Steering |
| Tires size | 235/60 R16 |
| Wheel rims size | 7.5J x 16 |
The Audi A8 (D3, 4E) facelift of 2005, specifically the 3.0 TDI V6 (233 Hp) quattro DPF Tiptronic variant, represents a significant evolution of Audi’s flagship luxury sedan. Produced from 2005 to 2007, this model occupied a crucial position within the A8 range, offering a blend of performance, efficiency, and advanced technology. It was positioned as a mid-range offering, bridging the gap between the entry-level 3.2-liter V6 petrol and the high-performance 4.2-liter V8 models. The D3 platform, also known as the 4E internally, aimed to compete directly with the BMW 7 Series and Mercedes-Benz S-Class, emphasizing a sophisticated driving experience and cutting-edge features.
Powertrain & Engine Architecture
The heart of this A8 variant is the 3.0-liter V6 diesel engine, designated ASB. This engine is a member of Audi’s robust V6 TDI family, known for its durability and refined power delivery. It features a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. The engine utilizes a variable geometry turbocharger (VGT) and an intercooler to maximize power and torque across a broad RPM range. The DOHC (Double Overhead Camshaft) valvetrain, with four valves per cylinder, further enhances breathing and efficiency. The six-speed Tiptronic automatic transmission, a torque converter-based unit, was specifically calibrated to handle the engine’s substantial 450 Nm (331.9 lb.-ft.) of torque. This transmission offered both fully automatic operation and manual gear selection via steering wheel-mounted paddles or the gear selector itself.
Driving Characteristics
The 3.0 TDI A8 offered a compelling blend of performance and comfort. While not as overtly sporty as the V8 models, the 233 hp and 450 Nm of torque provided ample power for effortless cruising and confident overtaking. The Tiptronic transmission, while smooth, wasn’t as quick-shifting as some contemporary dual-clutch transmissions. However, it provided a relaxed driving experience, particularly well-suited for long-distance journeys. The quattro all-wheel-drive system ensured excellent traction in all weather conditions, enhancing stability and control. The gear ratios were tuned for fuel efficiency and smooth acceleration, prioritizing usability over outright performance. Compared to the 3.2 petrol, the TDI offered significantly more torque and better fuel economy, while the higher-output V8 models provided a more exhilarating, but less efficient, driving experience.
Equipment & Trim Levels
The 3.0 TDI quattro Tiptronic typically came well-equipped, reflecting the A8’s luxury positioning. Standard features included leather upholstery, multi-zone climate control, a premium audio system, power-adjustable front seats with memory function, and a sunroof. Optional extras included adaptive cruise control, a navigation system, rear seat entertainment, and upgraded leather packages. The interior design emphasized elegance and sophistication, with high-quality materials and meticulous attention to detail. The dashboard layout was clean and intuitive, with a focus on user-friendliness.
Chassis & Braking
The A8 D3 featured an independent suspension system on all four wheels, designed to provide a comfortable ride and precise handling. The front suspension utilized a multi-link setup, while the rear employed a trapezoidal link design. Ventilated disc brakes were fitted on all four wheels, providing ample stopping power. The ABS (Anti-lock Braking System) and Electronic Stability Program (ESP) were standard safety features, enhancing braking performance and preventing skidding. Stabilizer bars were used front and rear to reduce body roll during cornering.
Market Reception & Comparison
The 3.0 TDI A8 was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, and luxurious interior. The fuel economy was a significant selling point, particularly in Europe where diesel engines were highly popular. Compared to the petrol-powered A8 variants, the TDI offered a more economical and practical option without sacrificing too much performance. However, some critics noted that the Tiptronic transmission could feel slightly sluggish at times. Reliability was generally good, although the complex diesel injection system required regular maintenance.
Legacy
The 3.0 TDI V6 engine proved to be a durable and reliable powerplant, and many examples are still on the road today. The A8 D3, including this variant, established Audi as a serious contender in the luxury sedan segment. The combination of quattro all-wheel drive, a comfortable ride, and a refined interior made it a popular choice for discerning buyers. In the used car market, the 3.0 TDI A8 represents a good value proposition, offering a luxurious and capable vehicle at a relatively affordable price. However, potential buyers should be aware of the maintenance requirements associated with a diesel engine, including regular servicing of the fuel injection system and particulate filter.
