The Audi A6 Sedan (C8), particularly the facelifted version introduced in 2023, represents the eighth generation of Audi’s mid-size executive car. The 45 TFSI variant, equipped with a 2.0-liter turbocharged four-cylinder engine producing 265 horsepower and paired with a mild-hybrid system and a seven-speed S tronic dual-clutch transmission, occupies a significant position within the A6 lineup. Production of this specific configuration ran from June 2023 to March 2025. It’s designed to balance performance, efficiency, and technology, appealing to buyers seeking a refined and capable luxury sedan. The “ultra” designation indicates a focus on optimized fuel economy through the quattro all-wheel-drive system’s intelligent torque distribution.
Technical Specifications
| Brand | Audi |
| Model | A6 |
| Generation | A6 Sedan (C8, facelift 2023) |
| Type (Engine) | 45 TFSI (265 Hp) Mild Hybrid quattro ultra S tronic |
| Start of production | June, 2023 |
| End of production | March, 2025 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Combined fuel consumption (WLTP) | 7.3-8.2 l/100 km (32.2 – 28.7 US mpg, 38.7 – 34.4 UK mpg, 13.7 – 12.2 km/l) |
| CO2 emissions (WLTP) | 166-186 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6 sec |
| Acceleration 0 – 62 mph | 6 sec |
| Acceleration 0 – 60 mph | 5.7 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6e |
| Weight-to-power ratio | 6.4 kg/Hp, 155.4 Hp/tonne |
| Weight-to-torque ratio | 4.6 kg/Nm, 217 Nm/tonne |
| Net (usable) battery capacity | 0.15 kWh |
| Battery voltage | 12 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Battery location | Under the front hood |
| Recuperation output | 6 kW |
| Electric motor power | 3 Hp |
| Electric motor Torque | 60 Nm (44.25 lb.-ft.) |
| Electric motor location | Front, Longitudinal |
| Power | 265 Hp @ 5250-6500 rpm |
| Torque | 370 Nm @ 1600-4500 rpm (272.9 lb.-ft. @ 1600-4500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | EA888 |
| 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 | 8.7 l (9.19 US qt | 7.65 UK qt) |
| Kerb Weight | 1705 kg (3758.88 lbs.) |
| Max. weight | 2340 kg (5158.82 lbs.) |
| Max load | 635 kg (1399.94 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 | 13.86 UK gal) |
| Max. roof load | 90 kg (198.42 lbs.) |
| Permitted trailer load with brakes (8%) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load with brakes (12%) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 95 kg (209.44 lbs.) |
| Length | 4939 mm (194.45 in.) |
| Width | 1886 mm (74.25 in.) |
| Width including mirrors | 2110 mm (83.07 in.) |
| Height | 1457 mm (57.36 in.) |
| Wheelbase | 2924 mm (115.12 in.) |
| Front track | 1630 mm (64.17 in.) |
| Rear (Back) track | 1617 mm (63.66 in.) |
| Front overhang | 920 mm (36.22 in.) |
| Rear overhang | 1095 mm (43.11 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle (turning diameter) | 12.1 m (39.7 ft.) |
| Approach angle | 13.7° |
| Departure angle | 16.9° |
| Drivetrain Architecture | ICE and electric motor drive front wheels, rear drive via clutch |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 7 gears, automatic transmission S tronic |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs, 338 mm |
| Rear brakes | Ventilated discs, 330 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/60 R17; 225/55 R18; 245/45 R19; 255/40 R20; 255/35 R21 |
| Wheel rims size | 7.5J x 17; 8J x 18; 8.5J x 19; 8.5J x 20; 8.5J x 21 |
INTRODUCTION
The Audi A6 Sedan (C8) facelift, launched in 2023, builds upon the already successful C8 platform, introducing updated styling, enhanced technology, and refined powertrain options. The 45 TFSI variant, powered by a 2.0-liter turbocharged four-cylinder engine, represents a sweet spot in the A6 range, offering a compelling blend of performance and efficiency. This model is positioned as a mid-range offering, sitting above the base 40 TFSI and below the more powerful 50 TFSI and S6 models. It caters to buyers who prioritize a comfortable driving experience and advanced features without the higher price tag of the performance-oriented trims. The “quattro ultra” system further enhances its appeal by providing all-wheel drive capability with optimized fuel consumption.
Powertrain & Engine Architecture
At the heart of the A6 45 TFSI lies the EA888 2.0-liter inline-four cylinder engine. This engine utilizes direct fuel injection and a single turbocharger with an intercooler to deliver 265 horsepower and 370 Nm (272.9 lb-ft) of torque. The engine’s output is available across a broad rev range, from 1600 to 4500 rpm, providing strong acceleration in everyday driving situations. The mild-hybrid system incorporates a 48-volt electrical system and a belt starter generator (BSG), enabling features like extended engine-off coasting, smoother start-stop operation, and a slight power boost during acceleration. The seven-speed S tronic dual-clutch transmission offers quick and precise gear changes, contributing to the car’s responsive feel. The transmission’s gear ratios are tuned to balance performance and fuel efficiency, with a relatively tall seventh gear for highway cruising.
Driving Characteristics
The A6 45 TFSI delivers a refined and comfortable driving experience. The 265 hp engine provides ample power for confident overtaking and merging, with a 0-60 mph time of around 5.7 seconds. While not as overtly sporty as the higher-output models, the 45 TFSI offers a satisfying level of performance for most drivers. The S tronic transmission shifts smoothly and quickly, enhancing the car’s responsiveness. The quattro all-wheel-drive system provides excellent traction in all weather conditions, inspiring confidence on slippery surfaces. The suspension is tuned for comfort, absorbing bumps and imperfections in the road with ease. Compared to the manual transmission versions (available in some markets), the S tronic offers greater convenience and ease of use, particularly in urban traffic.
Equipment & Trim Levels
The A6 45 TFSI typically comes well-equipped as standard. Key features include Audi’s Virtual Cockpit digital instrument cluster, a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, 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 include a premium sound system, a head-up display, massaging front seats, and a panoramic sunroof. Trim levels often vary by market, but generally offer increasing levels of luxury and technology.
Chassis & Braking
The A6 C8 utilizes a sophisticated chassis design featuring independent multi-link suspension at both the front and rear. This setup provides a comfortable ride and precise handling. The steering is precise and well-weighted, offering good feedback to the driver. The braking system consists of ventilated discs on all four wheels, providing strong and consistent stopping power. The front brakes measure 338mm, while the rear brakes are 330mm. ABS (Anti-lock Braking System) is standard, along with electronic stability control and traction control.
Market Reception & Comparison
The Audi A6 45 TFSI has been generally well-received by automotive critics. It’s praised for its refined driving experience, comfortable interior, and advanced technology. Compared to its rivals, such as the BMW 5 Series and Mercedes-Benz E-Class, the A6 45 TFSI offers a compelling combination of features and value. Fuel economy is competitive, with combined WLTP figures ranging from 7.3 to 8.2 l/100 km. Reliability has been generally good, although some owners have reported minor issues with the infotainment system. Compared to the more powerful 50 TFSI variant, the 45 TFSI offers a more affordable entry point into the A6 range, while still providing a satisfying level of performance.
Legacy
The EA888 engine family has a long and proven track record of reliability, and the 2.0-liter turbocharged four-cylinder engine in the A6 45 TFSI is expected to be durable and long-lasting with proper maintenance. The S tronic dual-clutch transmission is also generally reliable, although regular servicing is essential. As the C8 generation A6 ages, the 45 TFSI variant is likely to remain a popular choice in the used car market, offering a good balance of luxury, performance, and efficiency. Its advanced technology and comfortable driving experience will continue to appeal to buyers seeking a refined and capable executive sedan.
