About the Audi S4
The S4 sits in Audi's performance lineup as the faster sibling to the A4, offering significantly more power whilst retaining practicality for family use. The B8 generation (2009-2016) featured a 3.0-litre supercharged V6 producing 333bhp, whilst the B8.5 facelift brought styling updates and minor improvements. The current B9 generation (2016-present) switched to a twin-turbo 3.0-litre V6 with 354bhp, delivering 0-62mph in 4.7 seconds.
All S4 models come equipped with Audi's quattro all-wheel-drive system as standard, ensuring exceptional traction in all conditions. The interior features sports seats, upgraded trim materials, and Audi's latest MMI infotainment system depending on model year. Boot space remains generous at 480 litres, making the S4 genuinely practical for daily use.
What Affects the Price of a Used Audi S4
Generation and age: B8 models (2009-2012) start from around £8,000-£15,000, whilst B8.5 versions (2012-2016) command £15,000-£28,000. The newer B9 generation (2016 onwards) ranges from £25,000 to £45,000 depending on specification and mileage.
Mileage: Lower-mileage examples under 30,000 miles attract a significant premium, whilst those exceeding 100,000 miles see substantial depreciation. Service history is critical—cars with full Audi main dealer history command higher prices than those with independent or incomplete records.
Specification: Popular options like the Sport Differential, carbon ceramic brakes, B&O sound system, and Dynamic package add value. Avant estate versions typically sell for £1,000-£2,000 more than equivalent saloons due to added practicality. Colour choice matters, with prestige shades like Daytona Grey or Nardo Grey more desirable than standard blacks and silvers.
Tips for Buying a Used Audi S4
Check the service history: The supercharged V6 in B8 models requires regular oil changes—look for evidence of servicing every 9,000 miles or annually. On B9 models, ensure the twin-turbo engine has been maintained according to Audi's long-life service schedule. Carbon build-up on intake valves is common, so ask if walnut blasting has been performed.
Inspect the drivetrain: Listen for any whining from the supercharger on B8 models, which can indicate bearing wear. Test the quattro system thoroughly—clunking or binding in tight turns may suggest worn Haldex or differential components. The dual-clutch S tronic gearbox should shift smoothly; jerky changes at low speeds can indicate mechatronic unit issues.
Examine running costs: Budget for 25-30mpg in mixed driving and annual road tax of £190-£600 depending on registration date. Insurance sits in high groups (40-45), so obtain quotes before committing. Set aside funds for maintenance—brake discs, tyres, and suspension components wear faster due to the performance nature of the car.