About the Audi S4 Cabriolet
Produced between 2002 and 2009, the Audi S4 Cabriolet (B6 and B7 generations) featured a 4.2-litre V8 engine producing 344bhp. This four-seater convertible delivered 0-62mph in 5.9 seconds whilst maintaining Audi's reputation for build quality and refinement. Standard equipment included leather sports seats, xenon headlights, and the renowned quattro four-wheel-drive system. The B7 facelift from 2006 onwards brought revised styling, improved interior materials and updated technology.
What Affects the Price
Age and mileage are primary factors, with earlier B6 models (2002-2005) starting from around £8,000, whilst later B7 versions (2006-2009) command £15,000 to £45,000. Full Audi service history significantly increases value, as does evidence of major maintenance like timing chain replacement. Condition of the fabric roof and its operation is crucial—replacement costs are substantial. Low-mileage examples under 60,000 miles attract premium prices. Colour combinations matter, with popular shades like Phantom Black or Daytona Grey holding value better than unusual colours. Optional extras such as satellite navigation, Bang & Olufsen audio, and heated seats add appeal.
Buying Tips
Check the soft-top mechanism thoroughly for smooth operation and inspect the rear screen for cracks or delamination. Request evidence of timing chain and tensioner replacement—failure is common around 80,000 miles and repairs exceed £2,000. Examine service records for regular oil changes using correct specifications, as the V8 engine is sensitive to maintenance quality. Inspect for carbon build-up symptoms including rough idling or poor fuel economy. Check the quattro system engages properly and listen for worn differential bearings. Verify electric seat operation and climate control function, as repairs are expensive. A pre-purchase inspection at an Audi specialist is strongly recommended given the complex mechanical systems.