The B8 RS4 combines the naturally aspirated V8 with an estate body and S tronic. Buy on the condition of the transmission, suspension and brakes as much as the engine. Price optional equipment before paying a premium for it.
Which Audi RS4 B8 Avant should you buy?
Audi’s UK archive identifies the B8 Avant range. Its 450 PS 4.2 FSI V8 is paired with seven-speed S tronic and quattro. This is a distinct purchase from the manual B7 and turbocharged B9. Verify the actual suspension, brake options and equipment before comparing prices.
UK asking prices
On 6 November 2026, PistonHeads showed a 2014 4.2 at £16,495 with 105,000 miles, a 2013 450 PS Avant at £17,471 with 104,031 miles and a 2014 advertised Limited Edition at £28,898 with 27,577 miles. These are asking prices. Filter out B7 and B9 stock and compare exact equipment and history.
Common problems and inspection points
V8, cooling and intake
Ask for a cold start and check hot idle and response. Get recurring misfires, noise or reduced performance diagnosed. Direct injection can leave intake deposits, but ignition, fuelling and mechanical condition also matter. Ask for the invoice behind any cleaning or timing repair claim. Inspect fluid levels and the underside.
S tronic and quattro
Test cold engagement and warm manoeuvres, then ask for itemised gearbox service and repair invoices. Investigate repeatable shunting or warnings with an Audi-capable scan. Inspect driveline leaks and tyre circumference. Verify lubricant and service requirements for the fitted equipment.
DRC, brakes and body
Check whether optional DRC is fitted and look for leaks or knocking. Ask a specialist to inspect the system and price work. Check inner disc faces and whether ceramics or steel brakes are installed. Inspect tyre shoulders, boot floor, jacking points and undertrays, and test the tailgate and electronics.
Maintenance and parts
The V8 uses timing chains and a separate accessory drive. Confirm oil approval, transmission code and fitted brakes. Check damper equipment by VIN and inspect it before ordering.
Affiliate disclosure. We may earn a commission on purchases through the eBay links below. These are indicative UK parts-only allowances. Confirm the OE number and get fitted quotes separately.
| Part | Allowance | Fitment check |
|---|---|---|
| Oil kit | £75–£160 | Check oil approval. |
| Spark plugs | £65–£165 | Match engine. |
| Coils | £35–£100 | Diagnose first. |
| Alternator | £175–£490 | Verify OE number. |
| Accessory belt | £55–£155 | Check routing. |
| S tronic kit | £110–£270 | Match gearbox and fluid. |
| Front steel pads | £90–£240 | Match caliper. |
| Front steel discs | £320–£920 | Verify brake package. |
| DRC damper | £290–£850 | Confirm fitted option and corner. |
| Control arm | £75–£220 | Check side and geometry. |
| Coolant radiator | £110–£295 | Check circuit and fittings. |
Hidden ownership costs
Get fitted quotes for brakes, tyres and geometry, and separate estimates for any DRC or transmission concerns. Price optional ceramics with a specialist. Get a diagnosis for any persistent noise, misfire or loss of coolant before comparing cars.
Viewing checklist
- Confirm VIN, build, equipment and service history.
- Inspect from cold and road test fully warm.
- Check tyres, brakes, underbody and warning history.
- Get itemised estimates for work due.
- Check MOT history and obtain written repair estimates.
Audi RS4 B8 Avant FAQ
Is the B8 available with a manual?
The B8 covered here uses S tronic.
Do all B8 RS4s have DRC?
Verify the optional suspension and the actual hardware.
Does a carbon-clean invoice establish engine health?
It documents the work described. Get any current symptoms diagnosed separately.
