The Audi A6 Avant (C8) 45 TFSI, produced from 2020 to May 2023, represents a compelling blend of performance, efficiency, and practicality within the executive station wagon segment. Positioned as a mid-range offering in the C8 A6 Avant lineup, it slots between the entry-level 40 TDI models and the higher-performance S6 variants. This particular configuration combines a 2.0-liter turbocharged four-cylinder engine with a mild hybrid system, a seven-speed S tronic dual-clutch transmission, and Audi’s renowned quattro all-wheel-drive system. The “ultra” designation signifies a focus on fuel efficiency through on-demand all-wheel drive engagement.
Technical Specifications
| Brand | Audi |
| Model | A6 |
| Generation | A6 Avant (C8) |
| Type (Engine) | 45 TFSI (265 Hp) Mild Hybrid quattro ultra S tronic |
| Start of production | 2020 |
| End of production | May, 2023 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 7.5-8.4 l/100 km (31.4 – 28 US mpg, 37.7 – 33.6 UK mpg, 13.3 – 11.9 km/l) |
| CO2 emissions (WLTP) | 171-192 g/km |
| Fuel consumption (urban) | 8.9-9 l/100 km (26.4 – 26.1 US mpg, 31.7 – 31.4 UK mpg, 11.2 – 11.1 km/l) |
| Fuel consumption (extra urban) | 5.7-6.1 l/100 km (41.3 – 38.6 US mpg, 49.6 – 46.3 UK mpg, 17.5 – 16.4 km/l) |
| Fuel consumption (combined) | 6.8-7.2 l/100 km (34.6 – 32.7 US mpg, 41.5 – 39.2 UK mpg, 14.7 – 13.9 km/l) |
| CO2 emissions (NEDC) | 156-164 g/km |
| Fuel Type | Petrol (Gasoline) |
| 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-6d-ISC-FCM |
| Weight-to-power ratio | 6.7 kg/Hp, 149.7 Hp/tonne |
| Weight-to-torque ratio | 4.8 kg/Nm, 209 Nm/tonne |
| Power | 265 Hp @ 5250-6500 rpm |
| Torque | 370 Nm @ 1600-4300 rpm (272.9 lb.-ft. @ 1600-4300 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | DMTA, DPAA |
| Engine displacement | 1984 cm3 (121.07 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 82.5 mm (3.25 in.) |
| Piston Stroke | 92.8 mm (3.65 in.) |
| Compression ratio | 9.6:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 5.2 l (5.49 US qt | 4.58 UK qt) |
| Coolant capacity | 8.7 l (9.19 US qt | 7.65 UK qt) |
| Kerb Weight | 1770 kg (3902.18 lbs.) |
| Max. weight | 2405 kg (5302.12 lbs.) |
| Max load | 635 kg (1399.94 lbs.) |
| Trunk (boot) space – minimum | 565 l (19.95 cu. ft.) |
| Trunk (boot) space – maximum | 1680 l (59.33 cu. ft.) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (8%) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4939 mm (194.45 in.) |
| Width | 1886 mm (74.25 in.) |
| Width including mirrors | 2110 mm (83.07 in.) |
| Height | 1494 mm (58.82 in.) |
| Wheelbase | 2924 mm (115.12 in.) |
| Front track | 1630 mm (64.17 in.) |
| Rear track | 1617 mm (63.66 in.) |
| Drag coefficient (Cd) | 0.29 |
| Minimum turning circle | 12.1 m (39.7 ft.) |
| Drivetrain Architecture | ICE and electric motor drive front wheels, rear engagement via clutch |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 7 |
| Gearbox type | Automatic transmission S tronic |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
INTRODUCTION
The Audi A6 Avant (C8) 45 TFSI, launched in 2020, is a station wagon that forms part of the eighth generation (C8) of the A6 series. Built on the MLB Evo platform (shared with other Volkswagen Group vehicles like the Porsche Macan and Bentley Bentayga), it represents a significant step forward in terms of technology, refinement, and driving dynamics. The 45 TFSI designation indicates a 2.0-liter turbocharged engine producing 265 horsepower, coupled with a mild hybrid system for improved fuel economy. This variant aimed to provide a balance between performance and efficiency, appealing to buyers seeking a practical yet engaging driving experience.
Powertrain & Engine Architecture
At the heart of the A6 Avant 45 TFSI lies the EA888 2.0-liter inline-four cylinder engine, specifically coded DMTA or DPAA depending on the production year and market. This engine utilizes direct fuel injection and a single twin-scroll turbocharger with an intercooler to deliver a robust 265 hp and 370 Nm (272.9 lb-ft) of torque. The mild hybrid system, a 48-volt system, incorporates a belt starter generator (BSG) that enables features like extended engine-off coasting, regenerative braking, and a smoother start-stop function. This system doesn’t provide electric-only driving but significantly improves fuel efficiency. The engine’s valvetrain employs a dual overhead camshaft (DOHC) design with four valves per cylinder. Power is transmitted to all four wheels via Audi’s seven-speed S tronic dual-clutch transmission, known for its rapid and seamless gear changes. The “quattro ultra” system intelligently switches between front-wheel drive and all-wheel drive as needed, further optimizing fuel consumption.
Driving Characteristics
The A6 Avant 45 TFSI offers a refined and capable driving experience. The 265 hp engine provides ample power for everyday driving and confident overtaking maneuvers, achieving a 0-60 mph time of around 5.9 seconds. The S tronic transmission contributes to this responsiveness, delivering quick and precise shifts. While not as overtly sporty as the S6, the 45 TFSI provides a satisfying level of performance. The quattro all-wheel-drive system ensures excellent traction in various weather conditions. The suspension, typically a multi-link setup front and rear, provides a comfortable ride without sacrificing handling precision. The steering is precise and well-weighted, offering a connected feel to the road. Compared to the more economical 40 TDI models, the 45 TFSI offers a noticeable performance boost, while remaining more accessible and fuel-efficient than the higher-performance S6.
Equipment & Trim Levels
The A6 Avant 45 TFSI typically came well-equipped as standard. Common features included Audi’s Virtual Cockpit digital instrument cluster, a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, leather upholstery, three-zone automatic climate control, and a suite of driver-assistance systems such as lane departure warning and automatic emergency braking. Optional extras included features like a premium sound system, adaptive cruise control, a head-up display, and matrix LED headlights. Trim levels varied by market, but generally offered options for upgraded interior materials, exterior styling enhancements, and additional technology features.
Chassis & Braking
The C8 A6 Avant utilizes a sophisticated chassis design featuring independent multi-link suspension at both the front and rear axles. This configuration provides a comfortable ride and precise handling. The suspension geometry is tuned to balance ride comfort with dynamic stability. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. The electronic stability control (ESC) system integrates with the ABS (Anti-lock Braking System) and traction control systems to enhance safety and stability. The quattro ultra system’s rear differential incorporates a clutch that can engage or disengage the rear axle as needed, optimizing efficiency and handling.
Market Reception & Comparison
The Audi A6 Avant 45 TFSI was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, spacious interior, and advanced technology. Critics noted that the mild hybrid system effectively improved fuel economy without compromising performance. Compared to the 40 TDI models, the 45 TFSI offered a more engaging driving experience, while still delivering respectable fuel efficiency. Against competitors like the BMW 5 Series Touring and Mercedes-Benz E-Class Estate, the A6 Avant 45 TFSI was considered a strong contender, offering a compelling blend of luxury, performance, and practicality.
Legacy
The EA888 engine family, including the version found in the A6 Avant 45 TFSI, has a reputation for being relatively reliable, although preventative maintenance is crucial. Common issues can include carbon buildup on the intake valves, which can affect performance over time. The S tronic transmission is generally robust but requires regular servicing to ensure smooth operation. As a used car, the A6 Avant 45 TFSI represents a good value proposition, offering a luxurious and capable station wagon at a more accessible price point. Its blend of performance, efficiency, and technology continues to make it an attractive option for buyers seeking a premium estate car.
