About the Audi S6 Saloon
The S6 has been Audi's performance flagship saloon since 1994, sitting between the standard A6 and the flagship RS6. The C6 generation (2006-2011) featured a 5.2-litre V10 engine producing 435bhp, whilst the C7 generation (2012-2018) switched to a twin-turbo 4.0-litre V8 with 420bhp. The current C8 model, launched in 2019, uses a 3.0-litre V6 mild-hybrid diesel producing 344bhp, marking a significant departure from previous petrol-powered versions. All S6 models come with quattro all-wheel drive and exceptional build quality.
What Affects the Price of a Used Audi S6 Saloon
Age and mileage are primary factors, with sub-50,000-mile examples commanding premium prices. Generation matters significantly: C6 V10 models (2006-2011) now start around £8,000-£15,000, C7 V8s (2012-2018) range from £18,000-£35,000, whilst C8 diesels (2019+) start at £38,000. Full Audi service history adds 10-15% to values, particularly important given the complex mechanical systems. Specification level impacts price, with features like adaptive air suspension, Matrix LED headlights, and Bang & Olufsen audio adding value. Colour choice matters too—neutral shades like black, grey and white are easier to sell than bolder colours. Higher mileage examples depreciate rapidly due to concerns over expensive maintenance costs.
Tips for Buying a Used Audi S6 Saloon
Insist on comprehensive service history, particularly evidence of regular oil changes which are critical for engine longevity. On C6 V10 models, check for carbon build-up issues and examine the condition of the timing chain. C7 V8s can suffer from turbocharger wear and DRC (Dynamic Ride Control) suspension failures—budget £2,000+ for repairs. Test the quattro system thoroughly and listen for transmission issues, as the ZF automatic gearbox requires regular servicing. Inspect air suspension systems carefully as replacement air struts cost £500-£800 each. Check all electronics function correctly, including MMI system, adaptive cruise control and parking sensors. Consider an independent pre-purchase inspection from an Audi specialist, costing around £150-£250 but potentially saving thousands. Factor in running costs: expect 20-25mpg in real-world driving, £500+ annual road tax for pre-2017 models, and insurance in groups 45-50.