REDLINE ALLEYAudi RS3 8V buying guide
2015 to 2020. An 8V RS3 suits a driver who wants a very fast all weather hatch or sedan and will check the drivetrain servicing.
Big jobs
- S tronic DQ500 and leaks. Check all gears engage cleanly; neglected S tronic oil and filter services can be costly. Leaks round the bevel box and driveshafts were fixed under warranty on later cars.
Workshop jobs
- Fuel pump module. Cutting out at low speed or idle, a refusal to restart for about 10 minutes and a low fuel pressure code point to the lift pump module under the rear seat, which Audi updated.
- Haldex pump. A traction light that keeps coming on points to a faulty Haldex clutch pump.
- Carbon build up. The 2.5 five cylinder can build up carbon in the head, especially round the valves.
- Brakes, tuning and prop bolts. The front discs can overheat and fade under hard use, and tuning past standard stresses the drivetrain; prop shaft coupling bolts are a weak spot on cars launched often.
- Stone chips and accident repairs. The flared arches attract stone chips, and uneven panel gaps or paint can point to hidden accident damage.
Small jobs
- Rear shock mounts and front tyre wear. Knocking from the rear is most likely the rear shock mounts; early cars had incorrect parts fitted. The inside edge of the front tyres can wear badly.
Questions for the seller
- Has the fuel pump update been done?
- Has the S tronic had its oil and filter services?
- Is it tuned, and how often was launch control used?
- Have the rear shock mounts been replaced?
Sources
Researched 2026-11-05. General guidance from owner and specialist sources. Check the specific car with an independent inspection.