About the Audi S8
The Audi S8 is the high-performance variant of the A8 flagship saloon, offering exceptional power and luxury in equal measure. The third generation (D4, 2012-2017) featured a 4.0-litre twin-turbo V8 producing 513bhp, while the fourth generation (D5, 2019-present) increased output to 563bhp. Earlier second-generation models (D3, 2006-2011) used a 5.2-litre V10 engine. All S8 models come generously equipped with adaptive air suspension, LED lighting, premium leather interiors, and the latest MMI infotainment systems. Quattro all-wheel drive is standard across all generations, providing excellent traction and stability in all conditions.
What Affects the Price
Age and mileage are the primary factors determining used S8 values. Third-generation models (2012-2017) now represent the sweet spot for buyers, ranging from £15,000 to £35,000 depending on condition and specification. Fourth-generation cars command £35,000-£45,000 but remain relatively rare on the used market. Mileage significantly impacts value, with sub-50,000-mile examples commanding premiums of 20-30% over higher-mileage equivalents. Specification matters considerably—models with options like the Sport Differential, ceramic brakes, rear-seat entertainment, and Executive packages hold value better. Full Audi service history is essential and can add £2,000-£3,000 to resale value. Colour choice affects desirability, with metallics like Daytona Grey and Navarra Blue preferred over non-metallic finishes.
Buying Tips
Always verify full service history, ideally from Audi main dealers, as maintenance costs are substantial. Check for signs of carbon build-up on direct-injection engines, which can cause rough running—regular high-speed driving helps prevent this. Inspect the air suspension thoroughly; replacement struts cost £800-£1,200 each. Listen for any turbocharger whistle or excessive exhaust smoke. The dual-clutch transmission should shift smoothly without jerking—software updates address many issues. Budget £1,500-£2,500 annually for servicing and maintenance. Check all electrical systems function correctly, including matrix LED headlights, adaptive cruise control, and parking systems. Examine alloy wheels for kerb damage, as replacements are expensive. Consider an independent pre-purchase inspection given the complexity of these vehicles. Factor in running costs: expect 20-25mpg in real-world driving and £600+ annual road tax for pre-2017 models.