The Audi A6 Sedan (C8, facelift released in 2023) 45 TFSI represents a significant iteration within the eighth generation (C8) of Audi’s executive sedan. Introduced in June 2023 and continuing through March 2025, this variant occupies a key position in the A6 lineup, offering a balance between performance, efficiency, and technology. It builds upon the established A6 platform (1HX0/A3) with a focus on mild-hybrid electrification and refined driving dynamics. This model aimed to appeal to buyers seeking a premium sedan experience without the full commitment of a plug-in hybrid or fully electric vehicle.
Technical Specifications
| Brand | Audi |
| Model | A6 |
| Generation | A6 Sedan (C8, facelift 2023) |
| Type (Engine) | 45 TFSI (265 Hp) Mild Hybrid 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) | 6.9-7.9 l/100 km (34.1 – 29.8 US mpg, 40.9 – 35.8 UK mpg, 14.5 – 12.7 km/l) |
| CO2 emissions (WLTP) | 157-180 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.7 sec |
| Acceleration 0 – 62 mph | 6.7 sec |
| Acceleration 0 – 60 mph | 6.4 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6e |
| Weight-to-power ratio | 6.2 kg/Hp, 161.1 Hp/tonne |
| Weight-to-torque ratio | 4.4 kg/Nm, 224.9 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 | 1645 kg (3626.6 lbs.) |
| Max. weight | 2240 kg (4938.35 lbs.) |
| Max load | 595 kg (1311.75 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 the front wheels, mixed mode operation. |
| Drive wheel | Front wheel drive |
| 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 |
Powertrain & Engine Architecture
At the heart of the A6 45 TFSI lies the EA888 2.0-liter turbocharged inline-four cylinder engine. This engine, a staple in the Volkswagen Group’s portfolio, is known for its responsiveness and efficiency. The 2023 facelifted version benefits from updated engine management software and a refined turbocharger design. It produces 265 horsepower at 5250-6500 rpm and 370 Nm (272.9 lb-ft) of torque between 1600 and 4500 rpm. The engine utilizes direct fuel injection and a sophisticated valvetrain (DOHC) to optimize combustion. Crucially, this variant incorporates a 48-volt mild-hybrid system. This system features a belt starter generator (BSG) and a small lithium-ion battery (0.15 kWh) allowing for features like extended start-stop operation, coasting with the engine off, and a slight power boost during acceleration. The engine is paired with Audi’s seven-speed S tronic dual-clutch transmission, known for its quick and smooth shifts. This transmission is a key component in delivering a refined driving experience.
Driving Characteristics
The 45 TFSI with the S tronic transmission offers a balanced driving experience. While not as overtly sporty as some of the higher-powered A6 variants, it provides ample power for everyday driving and confident highway passing. The 0-60 mph acceleration time of around 6.4 seconds is respectable. The S tronic transmission contributes to a responsive feel, with quick gear changes and minimal torque interruption. The mild-hybrid system subtly enhances the driving experience by smoothing out transitions and providing a small power assist when needed. Compared to a manual transmission A6, the S tronic prioritizes convenience and ease of use. Compared to the more powerful 55 TFSI, the 45 TFSI offers a more fuel-efficient and accessible entry point into the A6 range.
Equipment & Trim Levels
The A6 45 TFSI typically came well-equipped as standard. Features included Audi’s Virtual Cockpit digital instrument cluster, a touchscreen infotainment system with Apple CarPlay and Android Auto integration, leather upholstery, tri-zone automatic climate control, and a suite of driver-assistance systems such as lane departure warning and automatic emergency braking. Optional extras included a premium sound system, adaptive cruise control, a head-up display, and various interior trim upgrades. Trim levels varied by market, but generally offered increasing levels of luxury and technology. The base trim focused on essential features, while higher trims added more premium materials and advanced driver aids.
Chassis & Braking
The A6 45 TFSI utilizes an independent multi-link suspension setup at both the front and rear axles, providing a comfortable and controlled ride. The suspension is tuned to balance ride comfort with handling precision. Braking duties are handled by ventilated discs on all four wheels, with larger discs typically fitted to higher trim levels. The A6 incorporates ABS (Anti-lock braking system) and electronic stability control as standard safety features. Steering is via a rack and pinion system with electric power assistance, offering precise and responsive steering feel.
Market Reception & Comparison
The A6 45 TFSI was generally well-received by automotive critics. It was praised for its refined engine, smooth transmission, comfortable ride, and well-appointed interior. Fuel economy, ranging from 6.9-7.9 l/100 km, was considered competitive for its class. Compared to the more powerful A6 55 TFSI, the 45 TFSI offered a more affordable entry point with only a moderate compromise in performance. The mild-hybrid system was also seen as a positive addition, contributing to improved fuel efficiency and reduced emissions. Some critics noted that the 45 TFSI lacked the outright excitement of its more powerful siblings, but it was considered a well-rounded and practical choice for most buyers.
Legacy
The EA888 engine, in its various iterations, has proven to be a reliable and durable powerplant. The mild-hybrid system, while relatively new, has also demonstrated good reliability in early reports. The S tronic transmission, while requiring more diligent maintenance than a traditional automatic, is generally considered robust when properly serviced. On the used car market, the 2023-2025 A6 45 TFSI is expected to hold its value well due to its combination of luxury, technology, and efficiency. Regular maintenance, including oil changes and transmission servicing, will be crucial to ensuring the long-term reliability of this variant.
