The Audi A6 Sedan (C8) 45 TDI V6, produced from December 2020 to May 2023, represents a sophisticated blend of performance and efficiency within the A6 lineup. This variant, equipped with a 3.0-liter turbocharged diesel engine and a mild hybrid system, occupied a mid-to-upper position in the C8 A6 range, appealing to buyers seeking a balance between spirited driving and reduced emissions. It leverages Audi’s quattro ultra all-wheel-drive system and a seven-speed S tronic dual-clutch transmission. The C8 generation A6, launched in 2018, aimed to modernize the executive sedan experience with advanced technology and a refined interior, and the 45 TDI V6 exemplified these goals.
Technical Specifications
| Brand | Audi |
| Model | A6 |
| Generation | A6 Sedan (C8) |
| Type (Engine) | 45 TDI V6 (245 Hp) Mild Hybrid quattro ultra S tronic |
| Start of production | December, 2020 |
| End of production | May, 2023 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Combined fuel consumption (WLTP) | 6.1-6.9 l/100 km (38.6 – 34.1 US mpg) |
| CO2 emissions (WLTP) | 160-181 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) |
| Net (usable) battery capacity | 0.5 kWh |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Power | 245 Hp @ 3500-4750 rpm |
| Torque | 500 Nm @ 1500-3250 rpm (368.78 lb.-ft.) |
| Engine displacement | 2967 cm3 (181.06 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Fuel injection system | Diesel Commonrail |
| Engine oil capacity | 6.1 l (6.45 US qt) |
| Kerb Weight | 1825 kg (4023.44 lbs.) |
| Max. weight | 2510 kg (5533.6 lbs.) |
| Trunk (boot) space – minimum | 530 l (18.72 cu. ft.) |
| Trunk (boot) space – maximum | 995 l (35.14 cu. ft.) |
| Fuel tank capacity | 63 l (16.64 US gal) |
| Number of gears and type of gearbox | 7 gears, automatic transmission S tronic |
| Front brakes | Ventilated discs, 338 mm |
| Rear brakes | Ventilated discs, 330 mm |
| Drag coefficient (Cd) | 0.27 |
| Length | 4939 mm (194.45 in.) |
| Width | 1866 mm (73.46 in.) |
Powertrain & Engine Architecture
The heart of the A6 45 TDI V6 is the EA897evo2 3.0-liter V6 diesel engine. This engine, designated with the code DMGH, represents a significant evolution in Audi’s diesel technology. It features a common rail direct injection system operating at extremely high pressures to optimize combustion efficiency and reduce particulate emissions. The engine utilizes a single turbocharger with variable geometry turbine (VGT) technology, coupled with an intercooler, to deliver both strong low-end torque and high-end power. The mild hybrid system, operating at 48V, incorporates a belt-driven starter-generator (BSG) and a small lithium-ion battery. This system allows for extended engine-off coasting, regenerative braking to recapture energy, and smoother start-stop operation, contributing to improved fuel economy. The seven-speed S tronic dual-clutch transmission provides rapid and seamless gear changes, enhancing both performance and driving comfort.
Driving Characteristics
The 45 TDI V6 offers a compelling driving experience characterized by strong acceleration and refined cruising. The 500 Nm (368.78 lb-ft) of torque available from 1500-3250 rpm provides effortless overtaking and responsive performance in various driving situations. The S tronic transmission’s quick shifts complement the engine’s power delivery, resulting in a 0-60 mph time of around 5.9 seconds. Compared to the lower-powered 2.0-liter TDI variants, the V6 offers a noticeably more relaxed and refined driving experience, particularly at highway speeds. While not as overtly sporty as the S6 models, the 45 TDI strikes a good balance between performance and comfort. The quattro ultra all-wheel-drive system intelligently distributes torque between the front and rear axles as needed, providing excellent traction and stability in all weather conditions.
Equipment & Trim Levels
The A6 45 TDI V6 typically came well-equipped as standard. Features included Audi’s Virtual Cockpit digital instrument cluster, a touchscreen infotainment system with navigation, leather upholstery, tri-zone automatic climate control, and a suite of advanced driver-assistance systems such as adaptive cruise control, lane departure warning, and automatic emergency braking. Optional extras included a Bang & Olufsen premium sound system, massaging front seats, a head-up display, and various cosmetic enhancements. Trim levels varied slightly by market, but generally offered options for upgraded interior materials, exterior styling packages, and larger alloy wheels.
Chassis & Braking
The C8 A6 features a sophisticated chassis design aimed at providing a comfortable yet engaging driving experience. The front suspension utilizes a multi-link setup, while the rear suspension also employs a multi-link design. Optional air suspension was available, offering adjustable ride height and damping for enhanced comfort and control. The braking system consists of ventilated discs on all four wheels, providing ample stopping power. The front discs measure 338mm, while the rear discs are 330mm. Anti-lock braking system (ABS), electronic stability control (ESC), and traction control are standard features.
Market Reception & Comparison
The Audi A6 45 TDI V6 was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, and advanced technology. Compared to its rivals, such as the BMW 5 Series and Mercedes-Benz E-Class, the A6 offered a compelling combination of features and performance. Fuel economy was a strong point, with the mild hybrid system contributing to real-world fuel consumption figures in the range of 6.1-6.9 l/100 km. Reliability reports have been generally positive, although, as with any modern diesel, potential issues with the diesel particulate filter (DPF) and emissions control systems should be considered. Compared to the 2.0 TDI, the V6 offered a more refined and powerful driving experience, justifying the higher price point for many buyers.
Legacy
The Audi A6 C8 45 TDI V6 represents a high point in modern diesel technology, offering a compelling blend of performance, efficiency, and refinement. While diesel engines are facing increasing scrutiny in some markets, the EA897evo2 V6 remains a robust and capable powertrain. On the used car market, these models hold their value relatively well, particularly those with low mileage and a full service history. The mild hybrid system adds a layer of future-proofing, and the A6’s overall build quality and advanced features continue to make it an attractive option for buyers seeking a comfortable and well-equipped executive sedan.
