The Audi A7 Sportback (C8) 40 TDI S tronic Mild Hybrid, produced from 2018 to 2023, represents a compelling blend of performance, efficiency, and luxury within the Audi A7 range. Positioned as a mid-range offering, it served as a more accessible entry point into the A7 Sportback lineup compared to the higher-performance 50 TDI and 55 TFSI models. This variant was primarily aimed at buyers seeking a refined grand tourer with respectable power and fuel economy, leveraging Audi’s advanced mild-hybrid technology. The C8 generation A7, built on the MLB Evo platform, prioritized sophisticated design and cutting-edge technology, and the 40 TDI variant embodies these characteristics.
Technical Specifications
| Brand | Audi |
| Model | A7 |
| Generation | A7 Sportback (C8) |
| Type | 40 TDI (204 Hp) S tronic Mild Hybrid |
| Start of production | 2018 |
| End of production | 2023 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Liftback |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 5.7-6.2 l/100 km (41.3 – 37.9 US mpg) |
| CO2 emissions (WLTP) | 149-161 g/km |
| Fuel consumption (urban) | 5.0-5.3 l/100 km (47 – 44.4 US mpg) |
| Fuel consumption (extra urban) | 4.2-4.6 l/100 km (56 – 51.1 US mpg) |
| Fuel consumption (combined) | 4.5-4.9 l/100 km (52.3 – 48 US mpg) |
| CO2 emissions | 117-127 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 8.3 sec |
| Acceleration 0 – 62 mph | 8.3 sec |
| Acceleration 0 – 60 mph | 7.9 sec |
| Maximum speed | 245 km/h (152.24 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 8.3 kg/Hp |
| Weight-to-torque ratio | 4.3 kg/Nm |
| Power | 204 Hp @ 3750-4200 rpm |
| Torque | 400 Nm @ 1750-3000 rpm (295.02 lb.-ft.) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | DFBA |
| Engine displacement | 1968 cm3 (120.09 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 5.5 l (5.81 US qt | 4.84 UK qt) |
| Kerb Weight | 1700 kg (3747.86 lbs.) |
| Trunk (boot) space (minimum) | 535 l (18.89 cu. ft.) |
| Fuel tank capacity | 63 l (16.64 US gal | 13.86 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load (braked) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load (unbraked) | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 95 kg (209.44 lbs.) |
| Length | 4969 mm (195.63 in.) |
| Width | 1908 mm (75.12 in.) |
| Width (including mirrors) | 2118 mm (83.39 in.) |
| Height | 1422 mm (55.98 in.) |
| Wheelbase | 2926 mm (115.2 in.) |
| Front track | 1651 mm (65 in.) |
| Rear track | 1637 mm (64.45 in.) |
| Front overhang | 927 mm (36.5 in.) |
| Rear overhang | 1116 mm (43.94 in.) |
| Drivetrain Architecture | Front wheel drive, MHEV |
| Number of gears | 7 |
| Gearbox type | Automatic transmission S tronic |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
Powertrain & Engine Architecture
The heart of the A7 40 TDI is the DFBA engine, a 2.0-liter inline-four cylinder diesel engine. This engine utilizes a sophisticated 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 produces 204 horsepower at 3750-4200 rpm and a substantial 400 Nm (295 lb-ft) of torque between 1750 and 3000 rpm. The mild-hybrid system, a 48-volt electrical system, incorporates a belt starter generator (BSG) and a small lithium-ion battery. This system allows for features like extended engine-off coasting, regenerative braking, and smoother start-stop operation, contributing to improved fuel efficiency. The engine is longitudinally mounted, driving the front wheels through Audi’s seven-speed S tronic dual-clutch transmission. This transmission is known for its quick and seamless gear changes, enhancing both performance and driving comfort.
Driving Characteristics
The A7 40 TDI S tronic offers a refined and comfortable driving experience. While not as overtly sporty as the higher-powered variants, the 204 hp engine provides ample power for everyday driving and highway cruising. The S tronic transmission contributes to brisk acceleration, with a 0-60 mph time of around 7.9 seconds. The engine’s strong low-end torque makes overtaking maneuvers effortless. The mild-hybrid system subtly enhances responsiveness, and the overall driving experience is characterized by smoothness and quietness. Compared to the manual transmission options available on some A7 models, the S tronic provides a more relaxed and convenient driving experience, particularly in urban traffic. The gear ratios are tuned for a balance between fuel efficiency and performance, prioritizing comfortable cruising over outright acceleration.
Equipment & Trim Levels
The 40 TDI S tronic typically came well-equipped as standard. Key features included Audi’s Virtual Cockpit digital instrument cluster, a touchscreen infotainment system with navigation, 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 adaptive cruise control, a Bang & Olufsen sound system, matrix LED headlights, and various interior trim upgrades. The interior design emphasized luxury and technology, with high-quality materials and a minimalist aesthetic. Trim levels often varied by market, but generally, the 40 TDI served as a solid base for customization with a wide range of optional packages.
Chassis & Braking
The A7 Sportback (C8) features a sophisticated chassis design. The front suspension utilizes MacPherson struts, while the rear employs a multi-link setup. This configuration provides a comfortable ride quality while maintaining good handling characteristics. The 40 TDI variant typically came equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The electronic stability control (ESC) system and anti-lock braking system (ABS) are standard features, enhancing safety and control. The suspension tuning is geared towards comfort, with a focus on absorbing road imperfections. Stabilizer bars are fitted front and rear to reduce body roll during cornering.
Market Reception & Comparison
The A7 40 TDI S tronic was generally well-received by automotive critics. It was praised for its refined driving experience, fuel efficiency, and luxurious interior. Compared to the more powerful 50 TDI, the 40 TDI offered a more affordable entry point into the A7 range, albeit with slightly less performance. Fuel economy was a key strength, with the mild-hybrid system contributing to impressive real-world figures. Reliability reports have been generally positive, with the 2.0-liter diesel engine proving to be a durable and dependable unit. However, some critics noted that the 40 TDI lacked the outright excitement of the higher-performance models.
Legacy
The Audi A7 Sportback (C8) 40 TDI S tronic Mild Hybrid represents a significant step forward in diesel engine technology and mild-hybrid integration. The DFBA engine has proven to be a reliable and efficient powerplant, and the S tronic transmission continues to be a popular choice among Audi enthusiasts. On the used car market, these models hold their value reasonably well, thanks to their reputation for quality and refinement. The combination of luxury, technology, and fuel efficiency makes the A7 40 TDI a compelling option for buyers seeking a sophisticated grand tourer.
