Audi RS4 B9 for Sale

What to Look For

• Turbo failure if oil changes not kept up
• Electrical issues with aging wiring harnesses
• Timing belt/chain service critical and expensive
• Carbon buildup on intake valves (direct injection engines)
• DRC (Dynamic Ride Control) shock failures — very expensive
• Differential failures under hard use
• Turbo wastegate rattle on twin-turbo V8s

Pre-Purchase Checklist

• Full service history with timing belt/chain records
• Check turbo for shaft play and oil leaks
• Inspect CV boots and joints
• Test quattro system — listen for binding on tight turns
• Check for electrical faults with VCDS/OBDeleven scan
• Check DRC shocks for leaks if equipped
• Carbon buildup inspection on DI engines
• Listen for turbo wastegate rattle
• Verify differential and transfer case condition
• Check brake rotor condition — expensive to replace

Useful Resources

• https://www.audisport.net/
• https://quattroworld.com/

Frequently Asked Questions

Is the Audi RS4 B9 a good investment?

The Audi RS4 B9 scores 61/100 on average, making it a moderate investment prospect. Look for well-maintained, low-mileage examples to maximize returns.

What is a fair price for a Audi RS4 B9?

The median asking price is €62,600, with listings ranging from €10,267 to €120,078. Final transaction prices may differ depending on condition, mileage, and provenance.

How many Audi RS4 B9 are for sale?

PistonAlpha currently tracks 263 active Audi RS4 B9 listings from dealers and auctions across Europe, updated daily.

What should I look for when buying a Audi RS4 B9?

Key areas to inspect: Turbo failure if oil changes not kept up; Electrical issues with aging wiring harnesses; Timing belt/chain service critical and expensive; Carbon buildup on intake valves (direct injection engines). A pre-purchase inspection by a marque specialist is highly recommended.

How have Audi RS4 B9 prices changed over time?

Prices have declined from €80,000 (2017) to €52,000 (2025), a decline of 35%. Values peaked at €86,102 in 2018 and have since corrected 40%.