The Audi A8 L (D4, 4H) 3.0 TDI V6 quattro Tiptronic represents a significant iteration of Audi’s flagship luxury sedan, produced from 2010 to 2011. This variant, powered by a 3.0-liter turbocharged diesel engine, occupied a crucial middle ground in the A8 lineup, offering a balance of performance, efficiency, and refinement. It was primarily aimed at the European and Asian markets, where diesel engines were – and continue to be – highly favored for their fuel economy and torque characteristics. The “L” designation signifies the long-wheelbase version, prioritizing rear passenger comfort. This model is part of the D4 generation, which introduced substantial advancements in technology and design compared to its predecessor.
Technical Specifications
| Brand | Audi |
| Model | A8 |
| Generation | A8L (D4, 4H) |
| Type (Engine) | 3.0 TDI V6 (250 Hp) quattro Tiptronic |
| Start of production | July, 2010 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 8 l/100 km (29.4 US mpg, 35.3 UK mpg, 12.5 km/l) |
| Fuel consumption (extra urban) | 5.8 l/100 km (40.6 US mpg, 48.7 UK mpg, 17.2 km/l) |
| Fuel consumption (combined) | 6.6 l/100 km (35.6 US mpg, 42.8 UK mpg, 15.2 km/l) |
| CO2 emissions | 176 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.2 sec |
| Acceleration 0 – 62 mph | 6.2 sec |
| Acceleration 0 – 60 mph | 5.9 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 7.6 kg/Hp, 132.3 Hp/tonne |
| Weight-to-torque ratio | 3.4 kg/Nm, 291 Nm/tonne |
| Power | 250 Hp @ 4000-4500 rpm |
| Power per litre | 84.3 Hp/l |
| Torque | 550 Nm @ 1500-3000 rpm (405.66 lb.-ft. @ 1500-3000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | CDTA, CMHA |
| 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 | 16.8:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.4 l (6.76 US qt | 5.63 UK qt) |
| Coolant | 11.5 l (12.15 US qt | 10.12 UK qt) |
| Kerb Weight | 1890 kg (4166.74 lbs.) |
| Max. weight | 2540 kg (5599.74 lbs.) |
| Max load | 650 kg (1433 lbs.) |
| Trunk (boot) space – minimum | 510 l (18.01 cu. ft.) |
| Trunk (boot) space – maximum | 906 l (32 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 | 5267 mm (207.36 in.) |
| Width | 1949 mm (76.73 in.) |
| Width including mirrors | 2111 mm (83.11 in.) |
| Height | 1471 mm (57.91 in.) |
| Wheelbase | 3122 mm (122.91 in.) |
| Front track | 1644 mm (64.72 in.) |
| Rear (Back) track | 1635 mm (64.37 in.) |
| Front overhang | 1003 mm (39.49 in.) |
| Rear overhang | 1142 mm (44.96 in.) |
| Drag coefficient (Cd) | 0.26 |
| Minimum turning circle (turning diameter) | 12.7 m (41.67 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 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 | Electric Steering |
| Tires size | 235/60 R17 |
| Wheel rims size | 8.0J x 17 |
INTRODUCTION
The Audi A8 L 3.0 TDI quattro Tiptronic, produced between 2010 and 2011, represents a sophisticated blend of luxury, performance, and efficiency within the fourth generation (D4) A8 model range. Positioned as a mid-range offering, it catered to buyers seeking a powerful yet economical engine paired with the convenience of an automatic transmission and Audi’s renowned quattro all-wheel-drive system. The long-wheelbase configuration (“L”) added approximately 130mm to the overall length, dedicating the extra space to enhanced rear passenger legroom and comfort. This variant was particularly popular in Europe and Asia, where diesel engines were favored for their fuel efficiency and torque output, making it ideal for long-distance travel.
Powertrain & Engine Architecture
At the heart of the A8 L 3.0 TDI lies the CDTA or CMHA engine code, a 3.0-liter V6 turbocharged diesel engine. This engine is a member of Audi’s modular engine family, known for its robust construction and advanced technology. It utilizes a common rail direct injection system, delivering fuel at extremely high pressure for optimized combustion. The engine features a single turbocharger with variable geometry turbine (VGT) technology, enhancing responsiveness and broadening the torque curve. The valvetrain employs double overhead camshafts (DOHC) with four valves per cylinder, contributing to efficient gas exchange. Paired with this engine is an eight-speed Tiptronic automatic transmission. This transmission offers smooth and precise gear changes, and allows the driver to manually select gears for greater control. The Tiptronic system is designed to adapt to driving style, providing both comfort and performance.
Driving Characteristics
The 3.0 TDI engine, producing 250 horsepower and a substantial 405 lb-ft of torque, delivers strong acceleration and effortless cruising. The eight-speed Tiptronic transmission is well-matched to the engine’s characteristics, providing quick and seamless shifts. While not as overtly sporty as the higher-output variants (like the 4.2-liter V8), the 3.0 TDI offers ample power for everyday driving and overtaking maneuvers. The quattro all-wheel-drive system provides excellent traction in all weather conditions, enhancing stability and confidence. Compared to the manual transmission versions, the Tiptronic offers greater convenience, particularly in urban environments. However, some enthusiasts might find the manual transmission more engaging. The gear ratios are tuned for a balance between fuel efficiency and performance, with taller gears for highway cruising and shorter gears for quicker acceleration.
Equipment & Trim Levels
The A8 L 3.0 TDI quattro Tiptronic came generously equipped as standard. Typical features included leather upholstery, power-adjustable front seats with memory function, a multi-function steering wheel, a premium audio system, dual-zone automatic climate control, and parking sensors. The long-wheelbase model also featured rear seat entertainment options and adjustable rear seats. Optional extras included a panoramic sunroof, adaptive cruise control, a head-up display, and advanced driver assistance systems. Interior trim options ranged from wood veneers to brushed aluminum, allowing buyers to personalize the cabin to their preferences. The dashboard layout was clean and modern, with a focus on intuitive controls and a high-quality finish.
Chassis & Braking
The A8 L featured an independent suspension system on all four wheels, providing a comfortable and controlled ride. The front suspension utilized a multi-link design, while the rear suspension employed a trapezoidal link setup. Stabilizer bars were fitted to both axles to reduce body roll during cornering. Braking duties were handled by ventilated disc brakes on all four wheels, providing ample stopping power. The anti-lock braking system (ABS) and electronic stability control (ESC) were standard features, enhancing safety and stability. The chassis was designed to minimize noise, vibration, and harshness (NVH), contributing to a refined driving experience.
Market Reception & Comparison
The A8 L 3.0 TDI quattro Tiptronic was generally well-received by automotive critics. It was praised for its refined ride, powerful and efficient engine, and luxurious interior. Compared to the higher-output V8 models, the 3.0 TDI offered a more economical option without sacrificing too much performance. The fuel economy was a significant advantage, particularly for drivers who covered long distances. However, some critics noted that the diesel engine was slightly noisier than the gasoline engines. Compared to competitors like the BMW 7 Series and Mercedes-Benz S-Class, the A8 L 3.0 TDI offered a compelling combination of features, performance, and value.
Legacy
The 3.0 TDI engine proved to be a reliable and durable powertrain, with many examples still on the road today. However, like all diesel engines, it is susceptible to issues related to the diesel particulate filter (DPF) and fuel injectors if not properly maintained. The Tiptronic transmission is also generally reliable, but regular fluid changes are essential to ensure smooth operation. In the used car market, the A8 L 3.0 TDI quattro Tiptronic remains a popular choice for buyers seeking a luxurious and efficient long-distance cruiser. Its combination of comfort, performance, and fuel economy continues to make it a desirable option, even after many years of service.
