What engine does the Audi S8 use?

[AustinLynn]

Audi S8 is equipped with a 4.0-liter twin-turbocharged V8 engine, delivering a maximum horsepower of 520 hp and a peak torque of 650 Nm. It features direct fuel injection technology and utilizes an aluminum alloy cylinder head and block. The engine is paired with an 8-speed automatic transmission (8AT). The Audi S8 has body dimensions of 5302 mm in length, 1945 mm in width, and 1483 mm in height, with a wheelbase of 3128 mm. The vehicle adopts a front-engine, all-wheel-drive (AWD) layout with a full-time AWD system. Both the front and rear suspensions are multi-link independent suspensions, and the body structure is of a unibody type. The steering assistance is electrically powered.

[OMaci]

I've been studying high-performance car engines, and the Audi S8 is powered by a beast - a 4.0-liter V8 twin-turbocharged gasoline engine paired with a 48-volt mild hybrid system, delivering a standard output of 571 horsepower and a maximum torque of 800 Nm. It can accelerate to 100 km/h in just 3.8 seconds, with ultra-fast response and virtually no turbo lag. The twin-turbo design ensures more efficient air intake, and when combined with the 8-speed automatic transmission and quattro all-wheel drive, the driving experience is both explosive and silky smooth. I also discovered it features intelligent cylinder deactivation, shutting down four cylinders at low speeds to save fuel, with a combined fuel consumption of around 12 liters. The engine compartment's soundproofing is excellent, delivering a roaring sound when pushing hard, yet remaining quiet and comfortable during cruising. The advantage of this powertrain lies in its perfect balance between sportiness and luxury, truly representing the pinnacle of Audi's technology.

[VonZane]

I'm addicted to driving performance cars. The Audi S8's 4.0-liter V8 biturbo engine leaps forward with just a light tap on the accelerator, and that 571-horsepower thrust sends adrenaline surging through your veins. The thrill of hitting 100 km/h in 3.8 seconds makes overtaking on highways or mountain roads incredibly exhilarating. Its exhaust note is even more captivating—deep and powerful at startup, roaring like thunder during acceleration, far more engaging than some pure electric sports cars. Compared to the BMW M5, the S8's quattro system provides better tire grip and more stable cornering, unlike rear-wheel drive which tends to slip. For daily driving, it's wild but not unruly, with an acceptable fuel consumption of around 13 liters. On weekend track runs, the engine responds directly and precisely, with early turbo engagement and almost no lag. I believe this powertrain is the perfect blend of speed and comfort, worth a try for every enthusiast.

[SanBenjamin]

I commute daily in an S8 powered by a 4.0L V8 twin-turbo engine. While it delivers exceptional power, it remains surprisingly manageable for everyday use. Paired with a 48V mild hybrid system, its start-stop function operates smoothly in traffic, with fuel consumption maintained between 11-14 liters—more economical than expected. The acceleration is blistering, but what truly impresses is its refinement: seamless gear shifts, minimal engine vibration, and fatigue-free long-distance comfort. As an owner for two years, I've found its reliability commendable, with robust component quality. Maintenance does require periodic 4S dealership visits (given the complexity of turbo and electrical systems), but it's a worthy investment. The engine stays whisper-quiet during highway cruising, yet instantly transforms into a track-ready beast in Sport mode—a true all-rounder.

[Mitch]

Having driven for decades, the Audi S8's engine left a profound impression on me: a 4.0-liter V8 twin-turbo with linear and reliable power output that doesn't diminish with age. It features mild hybrid assistance, requiring meticulous system maintenance, such as professional inspections for the turbo and electronic components every few tens of thousands of kilometers—costly but effective in preventing issues. Daily driving consumes around 13 liters per 100 km, dropping to 9 liters on highways, showcasing balanced performance. In terms of driving experience, the engine responds swiftly, delivering immediate power upon throttle input, yet it operates quietly in congested traffic, thanks to excellent sound insulation. Regular oil and filter changes are recommended, along with avoiding unauthorized modifications, as the factory tuning ensures safety and durability. Over the long term, this engine's reliability is truly commendable.

[WestonLee]

From an environmental perspective, while the 4.0-liter V8 twin-turbo engine in the Audi S8 carries high emission risks, its 48-volt mild hybrid system is a standout feature—providing acceleration assistance and energy recovery during braking, which keeps the combined fuel consumption under 12 liters, about 10% more efficient than a traditional V8. The cylinder deactivation technology shuts down half the cylinders during cruising, further reducing consumption and making city driving greener. On the road, the power remains exhilarating, with 571 horsepower uncompromised, but the technology makes it smarter and more efficient. I believe that amid the wave of electric vehicles, such innovations in internal combustion engines preserve performance appeal while advancing industry sustainability. The engine runs smoothly and powerfully, reflecting Audi’s pragmatic approach to the future.