The Audi A8 L (D4, 4H facelift) 3.0 TDI V6 quattro Tiptronic, produced from 2015 to 2017, represents a significant iteration of Audi’s flagship luxury sedan. This variant, part of the fourth generation (D4) A8 family, was positioned as a high-performance, technologically advanced option within the A8 lineup, particularly appealing to buyers seeking a blend of power, efficiency, and all-weather capability. The “L” designation signifies the long-wheelbase version, prioritizing rear passenger comfort. This model occupied a middle ground in the A8 range, slotting between the entry-level 3.0 TFSI petrol engine and the more potent 4.0 TFSI and S8 performance models.
Technical Specifications
| Brand | Audi |
| Model | A8 |
| Generation | A8L (D4,4H facelift 2013) |
| Type (Engine) | 3.0 TDI V6 (262 Hp) quattro Tiptronic |
| Start of production | 2015 |
| End of production | 2017 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 7.5 l/100 km (31.4 US mpg, 37.7 UK mpg, 13.3 km/l) |
| Fuel consumption (extra urban) | 5 l/100 km (47 US mpg, 56.5 UK mpg, 20 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 | 6.1 sec |
| Acceleration 0 – 62 mph | 6.1 sec |
| Acceleration 0 – 60 mph | 5.8 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 7.4 kg/Hp, 135.4 Hp/tonne |
| Weight-to-torque ratio | 3.3 kg/Nm, 299.7 Nm/tonne |
| Power | 262 Hp @ 4000-4250 rpm |
| Power per litre | 88.3 Hp/l |
| Torque | 580 Nm @ 1750-2500 rpm (427.79 lb.-ft. @ 1750-2500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | CTBD |
| Engine displacement | 2967 cm3 (181.06 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 6.4 l (6.76 US qt | 5.63 UK qt) |
| Kerb Weight | 1935 kg (4265.94 lbs.) |
| Max. weight | 2585 kg (5698.95 lbs.) |
| Max load | 650 kg (1433 lbs.) |
| Trunk (boot) space – minimum | 520 l (18.36 cu. ft.) |
| Fuel tank capacity | 82 l (21.66 US gal | 18.04 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 | 5265 mm (207.28 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.) |
| 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 |
| Tires size | 235/60 R17 |
| Wheel rims size | 8J x 17 |
Powertrain & Engine Architecture
At the heart of the A8 L 3.0 TDI is the CTBD engine, a 3.0-liter V6 diesel engine. This engine is a member of Audi’s modular engine family, known for its robust construction and advanced technology. The CTBD utilizes a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. A single turbocharger, coupled with an intercooler, provides forced induction, boosting power and torque. The engine features four valves per cylinder and a sophisticated engine management system to balance performance and fuel efficiency. The eight-speed Tiptronic automatic transmission is a crucial component, offering smooth and responsive gear changes. This transmission allows for both fully automatic operation and manual gear selection via steering wheel-mounted paddles or the gear selector. The quattro all-wheel-drive system distributes power between all four wheels, enhancing traction and stability, especially in adverse weather conditions.
Driving Characteristics
The 3.0 TDI V6 with the Tiptronic transmission delivers a refined and capable driving experience. While not as overtly sporty as the higher-output A8 variants, it provides ample power for effortless cruising and confident overtaking. The 580 Nm (427.79 lb-ft) of torque, available from a low 1750 rpm, provides strong acceleration in everyday driving situations. The Tiptronic transmission is well-tuned, offering smooth shifts and quick responses. Compared to the six-speed automatic found in earlier D4 A8 models, the eight-speed unit improves fuel economy and provides a wider range of gear ratios. The quattro all-wheel drive system inspires confidence in all conditions, providing excellent grip and stability. The long wheelbase contributes to a comfortable ride, absorbing bumps and imperfections in the road surface effectively.
Equipment & Trim Levels
The A8 L 3.0 TDI typically came well-equipped as standard. Features included leather upholstery, power-adjustable front seats with memory function, a premium sound system, a navigation system with MMI touch response, and a suite of driver-assistance systems such as adaptive cruise control, lane departure warning, and automatic emergency braking. Optional extras included massaging seats, a rear-seat entertainment system, a panoramic sunroof, and various customization options for interior trim and exterior paint. The A8 L prioritized luxury and comfort, offering a spacious and well-appointed cabin.
Chassis & Braking
The A8 L features an independent suspension system on all four wheels, designed to provide a comfortable and controlled ride. The front suspension utilizes a multi-link setup, while the rear employs a trapezoidal link design. Ventilated disc brakes are fitted on all four wheels, providing ample stopping power. The electronic stability control (ESC) system works in conjunction with the ABS (Anti-lock Braking System) to maintain stability and control during braking and cornering. The steering system is a rack-and-pinion type with power assistance, offering precise and responsive steering feel.
Market Reception & Comparison
The A8 L 3.0 TDI was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, and advanced technology. Fuel economy was a strong point, particularly compared to the petrol-powered A8 variants. Compared to the 3.0 TFSI, the TDI offered superior torque and fuel efficiency, making it a popular choice for long-distance drivers. However, some critics noted that the diesel engine lacked the smoothness and responsiveness of the petrol engines. The 3.0 TDI also offered a more affordable entry point into the A8 range compared to the more powerful 4.0 TFSI and S8 models.
Legacy
The Audi A8 L 3.0 TDI (D4, 4H facelift) has proven to be a reliable and durable vehicle. The CTBD engine is known for its longevity, provided it receives regular maintenance. The Tiptronic transmission is also generally reliable, although servicing is crucial to prevent issues. In the used car market, these A8 L models remain desirable due to their combination of luxury, performance, and fuel efficiency. However, potential buyers should be aware of the potential for diesel particulate filter (DPF) issues, particularly on vehicles that have primarily been used for short trips. Overall, the A8 L 3.0 TDI represents a well-engineered and sophisticated luxury sedan that continues to offer a compelling ownership experience.
