The Audi Q8 50 TDI, introduced with the 2023 facelift of the 4M generation, represents a compelling blend of luxury, performance, and efficiency within Audi’s SUV lineup. Production commenced in September 2023, positioning this variant as a key offering in the mid-range of the Q8 series. It leverages a mild hybrid diesel powertrain coupled with Audi’s quattro all-wheel drive system and an eight-speed tiptronic automatic transmission. This configuration aims to deliver a refined driving experience with reduced emissions, appealing to buyers seeking a sophisticated and capable SUV.
Technical Specifications
| Brand | Audi |
| Model | Q8 |
| Generation | Q8 (4M, facelift 2023) |
| Type (Engine) | 50 TDI V6 (286 Hp) Mild Hybrid quattro tiptronic |
| Start of production | September, 2023 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 8-8.9 l/100 km (29.4 – 26.4 US mpg, 35.3 – 31.7 UK mpg, 12.5 – 11.2 km/l) |
| CO2 emissions (WLTP) | 210-232 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 6.1 sec |
| Acceleration 0 – 62 mph | 6.1 sec |
| Acceleration 0 – 60 mph | 5.8 sec |
| Maximum speed | 241 km/h (149.75 mph) |
| Emission standard | Euro 6e |
| Weight-to-power ratio | 7.6 kg/Hp, 132.4 Hp/tonne |
| Weight-to-torque ratio | 3.6 kg/Nm, 277.8 Nm/tonne |
| Battery voltage | 48 V |
| Battery location | Under the trunk |
| Power | 286 Hp @ 3500-4000 rpm |
| Power per litre | 96.4 Hp/l |
| Torque | 600 Nm @ 1750-3250 rpm (442.54 lb.-ft. @ 1750-3250 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | DHXA |
| Engine displacement | 2967 cm3 (181.06 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 6.1 l (6.45 US qt | 5.37 UK qt) |
| Coolant | 12.3 l (13 US qt | 10.82 UK qt) |
| Kerb Weight | 2160 kg (4761.98 lbs.) |
| Max. weight | 2900 kg (6393.41 lbs.) |
| Max load | 740 kg (1631.42 lbs.) |
| Trunk (boot) space – minimum | 605 l (21.37 cu. ft.) |
| Fuel tank capacity | 85 l (22.45 US gal | 18.7 UK gal) |
| AdBlue tank | 24 l (6.34 US gal | 5.28 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 2800 kg (6172.94 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 115 kg (253.53 lbs.) |
| Length | 4992 mm (196.54 in.) |
| Width | 1995 mm (78.54 in.) |
| Width including mirrors | 2190 mm (86.22 in.) |
| Height | 1697 mm (66.81 in.) |
| Wheelbase | 2998 mm (118.03 in.) |
| Front track | 1679 mm (66.1 in.) |
| Rear (Back) track | 1691 mm (66.57 in.) |
| Front overhang | 985 mm (38.78 in.) |
| Rear overhang | 1009 mm (39.72 in.) |
| Drivetrain Architecture | ICE and electric motor drive all four wheels |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission tiptronic |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 275/50 R20 |
| Wheel rims size | 20 |
Powertrain & Engine Architecture
The heart of the Q8 50 TDI is the 3.0-liter V6 diesel engine, designated DHXA. This engine benefits from a single turbocharger and intercooler, delivering 286 horsepower at 3500-4000 rpm and a substantial 600 Nm (442.54 lb.-ft.) of torque between 1750 and 3250 rpm. The engine utilizes a Diesel Commonrail fuel injection system for precise fuel delivery and optimized combustion. Crucially, this variant incorporates a 48-volt mild hybrid system. This system employs a belt starter generator (BSG) and a small 48V lithium-ion battery to enable features like extended start-stop operation, coasting with engine off, and a mild power boost during acceleration. The eight-speed tiptronic automatic transmission is standard, offering smooth and responsive gear changes. The transmission is tuned to prioritize fuel efficiency and comfort, with a focus on seamless shifts rather than aggressive performance.
Driving Characteristics
The Q8 50 TDI Automatic provides a comfortable and composed driving experience. While not as overtly sporty as some of its higher-performance siblings, the 286 hp and 442 lb-ft of torque provide ample power for confident overtaking and effortless cruising. The 0-60 mph time of around 5.8 seconds is respectable for a large SUV. The tiptronic transmission’s gear ratios are optimized for both fuel economy and usability, providing sufficient torque in most driving situations. Compared to the more powerful Q8 55 TFSI, the 50 TDI offers a more relaxed and refined driving experience, prioritizing comfort over outright speed. The quattro all-wheel drive system ensures excellent traction and stability in all weather conditions.
Equipment & Trim Levels
The Q8 50 TDI typically comes well-equipped as standard. Features generally include Audi’s Virtual Cockpit digital instrument cluster, a large infotainment touchscreen with navigation, leather upholstery, tri-zone automatic climate control, and a suite of driver-assistance systems such as adaptive cruise control, lane departure warning, and automatic emergency braking. Optional extras often include upgraded sound systems, panoramic sunroofs, massaging seats, and various cosmetic enhancements. Trim levels beyond the base model often add features like more luxurious leather options, unique interior trim pieces, and larger alloy wheels.
Chassis & Braking
The Q8 50 TDI utilizes an independent multi-link suspension setup at both the front and rear axles, providing a comfortable ride and good handling characteristics. The suspension is tuned to balance comfort and control, absorbing bumps effectively while maintaining body composure in corners. Ventilated disc brakes are fitted on all four wheels, providing ample stopping power. The electronic stability control (ESC) system works in conjunction with the ABS (Anti-lock Braking System) to enhance safety and stability.
Market Reception & Comparison
The Audi Q8 50 TDI was generally well-received by automotive critics. It was praised for its refined engine, comfortable ride, spacious interior, and advanced technology. Compared to the Q8 45 TDI, the 50 TDI offers a noticeable performance upgrade. Against competitors like the BMW X6 and Mercedes-Benz GLE, the Q8 50 TDI holds its own in terms of luxury, technology, and driving dynamics. Fuel economy is a strong point, with the mild hybrid system contributing to improved efficiency compared to non-hybrid diesel SUVs.
Legacy
The DHXA engine, while relatively modern, has demonstrated good reliability in other Audi and Volkswagen applications. The 48V mild hybrid system is also proving to be a durable and effective technology. On the used car market, the 2023 Q8 50 TDI is expected to hold its value well due to its desirable combination of features, performance, and efficiency. Regular maintenance, including oil changes and adherence to Audi’s recommended service intervals, will be crucial for ensuring the long-term reliability of this powertrain.
