The Audi Q8 (4M) 55 TFSI V6 quattro Mild Hybrid Tiptronic is a performance-oriented sport utility vehicle (SUV) produced by the German manufacturer Audi from February 2019 to September 2023. Positioned as a flagship within Audi’s Q range, the Q8 blends the practicality of an SUV with the driving dynamics of a coupe. This particular variant, designated “55 TFSI,” represents a mid-to-high trim level, offering a potent combination of power, luxury, and advanced technology. It is built on the MLB Evo platform, shared with other Volkswagen Group vehicles like the Porsche Cayenne and Lamborghini Urus.
Technical Specifications
| Brand | Audi |
| Model | Q8 |
| Generation | Q8 (4M) |
| Type (Engine) | 55 TFSI V6 (340 Hp) quattro Mild Hybrid Tiptronic |
| Start of production | February, 2019 |
| End of production | September, 2023 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 10.2-11.3 l/100 km (23.1 – 20.8 US mpg) |
| CO2 emissions (WLTP) | 232-257 g/km |
| Fuel consumption (urban) | 11.4-11.6 l/100 km (20.6 – 20.3 US mpg) |
| Fuel consumption (extra urban) | 7.4-7.7 l/100 km (31.8 – 30.5 US mpg) |
| Fuel consumption (combined) | 8.9-9.1 l/100 km (26.4 – 25.8 US mpg) |
| CO2 emissions | 202-207 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.9 sec |
| Acceleration 0 – 62 mph | 5.9 sec |
| Acceleration 0 – 60 mph | 5.6 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 6.2 kg/Hp |
| Weight-to-torque ratio | 4.2 kg/Nm |
| Power | 340 Hp @ 5000-6400 rpm |
| Torque | 500 Nm @ 1370-4500 rpm (368.78 lb.-ft.) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | DCBD |
| Engine displacement | 2995 cm3 (182.77 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 84.5 mm (3.33 in.) |
| Piston Stroke | 89 mm (3.5 in.) |
| Compression ratio | 11.2:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 7.6 l (8.03 US qt | 6.69 UK qt) |
| Coolant capacity | 13.7 l (14.48 US qt | 12.05 UK qt) |
| Kerb Weight | 2095 kg (4618.68 lbs.) |
| Max. weight | 2820 kg (6217.04 lbs.) |
| Max load | 725 kg (1598.35 lbs.) |
| Trunk (boot) space – minimum | 605 l (21.37 cu. ft.) |
| Trunk (boot) space – maximum | 1755 l (61.98 cu. ft.) |
| Fuel tank capacity | 85 l (22.45 US gal | 18.7 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (8%) | 2700 kg (5952.48 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4986 mm (196.3 in.) |
| Width | 1995 mm (78.54 in.) |
| Width including mirrors | 2190 mm (86.22 in.) |
| Height | 1705 mm (67.13 in.) |
| Wheelbase | 2995 mm (117.91 in.) |
| Front track | 1679 mm (66.1 in.) |
| Rear track | 1691 mm (66.57 in.) |
| Drag coefficient (Cd) | 0.33 |
| Minimum turning circle | 13.3 m (43.64 ft.) |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Number of gears | 8 |
| Type of gearbox | Automatic transmission Tiptronic |
INTRODUCTION
The Audi Q8 55 TFSI V6 quattro Mild Hybrid Tiptronic, launched in 2019, represents a significant step forward in Audi’s SUV lineup. It was designed to appeal to buyers seeking a more dynamic and luxurious alternative to traditional SUVs. The “55 TFSI” designation indicates the engine’s power output, while “quattro” signifies Audi’s renowned all-wheel-drive system. The “Mild Hybrid” component denotes the inclusion of a 48-volt electrical system that assists the engine, improving fuel efficiency and reducing emissions. This model occupied a sweet spot in the Q8 range, offering a compelling balance between performance and refinement, positioned above the base 45 TFSI and below the performance-focused SQ8.
Powertrain & Engine Architecture
At the heart of the Q8 55 TFSI lies the DCBD engine, a 3.0-liter V6 gasoline engine. This engine utilizes a direct injection system, delivering fuel directly into the combustion chambers for improved efficiency and power. It’s turbocharged, employing a twin-scroll turbocharger to minimize turbo lag and provide a broad torque curve. The engine produces 340 horsepower at 5000-6400 rpm and 500 Nm (368.78 lb-ft) of torque between 1370 and 4500 rpm. The mild hybrid system incorporates a belt-driven starter generator (BSG) and a small lithium-ion battery. The BSG allows for extended engine-off coasting, regenerative braking, and a smoother start-stop system. The transmission is an eight-speed Tiptronic automatic, known for its smooth and responsive shifts. This transmission features adaptive shift programs and a manual mode for driver control.
Driving Characteristics
The Q8 55 TFSI delivers a refined and engaging driving experience. The 340 hp engine provides ample power for confident acceleration, achieving 0-60 mph in approximately 5.6 seconds. The quattro all-wheel-drive system ensures excellent traction in all weather conditions, distributing power between the front and rear axles as needed. The eight-speed Tiptronic transmission contributes to smooth gear changes and efficient cruising. Compared to the base 45 TFSI model, the 55 TFSI offers noticeably stronger acceleration and a more responsive feel. While not as aggressively tuned as the SQ8, the 55 TFSI provides a satisfying balance of performance and comfort. The suspension is tuned for a comfortable ride, while still providing good body control in corners.
Equipment & Trim Levels
The Q8 55 TFSI came well-equipped as standard. Typical features included Audi’s Virtual Cockpit digital instrument cluster, a 10.1-inch touchscreen infotainment system with navigation, leather upholstery, three-zone automatic climate control, and a panoramic sunroof. Available options included adaptive air suspension, massaging front seats, a Bang & Olufsen premium sound system, and various driver-assistance features such as adaptive cruise control, lane keeping assist, and a 360-degree camera system. Interior trim options ranged from brushed aluminum to wood veneers, allowing buyers to personalize the cabin to their preferences.
Chassis & Braking
The Q8 55 TFSI features a fully independent suspension system, with multi-link setups at both the front and rear. This configuration provides a comfortable ride and precise handling. The standard brakes consist of ventilated discs at all four corners. Larger brake rotors and calipers were available as an option. The Q8’s steering system is electric power-assisted, offering precise and responsive steering feel. The chassis is designed to be rigid, contributing to the vehicle’s stability and handling characteristics.
Market Reception & Comparison
The Audi Q8 55 TFSI V6 was generally well-received by automotive critics. It was praised for its stylish design, luxurious interior, and strong performance. Reviewers noted the engine’s smooth power delivery and the transmission’s responsiveness. Compared to rivals like the BMW X6 and Mercedes-Benz GLE Coupe, the Q8 was often lauded for its sophisticated interior and advanced technology. Fuel economy was considered reasonable for a vehicle of its size and performance, although it wasn’t a class leader. Reliability reports have been generally positive, with few major issues reported.
Legacy
The Audi Q8 55 TFSI V6 quattro Mild Hybrid Tiptronic remains a desirable SUV in the used car market. Its combination of performance, luxury, and technology continues to appeal to buyers. The 3.0-liter V6 engine has proven to be relatively reliable, although regular maintenance is essential. The mild hybrid system has also demonstrated good durability. As Audi continues to transition towards fully electric vehicles, the Q8 55 TFSI represents a compelling example of the brand’s engineering prowess during the twilight of the internal combustion engine era.
