2020 Audi RS 6 Crbn BLK Tfsi Mhev Quat A: common problems and what to check
What gets flagged at MOT on 2020 Audi RS 6 Crbn BLK Tfsi Mhev Quat As, from 130 tests in 2025, plus known faults and what to look at before you buy one.
Small sample: only 130 of these were MOT tested in 2025, so treat the percentages as rough. The known faults below don't depend on it.
What gets flagged at MOT
The share of 2020 Audi RS 6 Crbn BLK Tfsi Mhev Quat A MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.
- Tyres11% of testsRough price £70–£150
At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.
- Wipers, windscreen and mirrors4% of testsRough price £15–£250
At the viewing: Check for chips in the driver's view, and test the wipers and washers.
- Brakes3% of testsRough price £150–£350
At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.
- Exhaust and emissions1% of testsRough price £100–£1,200
At the viewing: Look for black soot in the tailpipe, listen for blowing from the exhaust and check for engine or DPF warning lights.
- Suspension1% of testsRough price £120–£400
At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.
- Steering1% of testsRough price £100–£450
At the viewing: On a straight road the steering wheel should sit straight. Feel for play or knocking when turning.
Known faults
Reported by owners, mechanics and buying guides for this model and age. Check which engine the car has, as some apply to one engine only.
- Electrical and infotainment faultsAll engines
It came last of 24 executive cars in What Car?'s survey: 44% had a fault, about two-thirds electrical or infotainment (phones not connecting, flickering screens), and nearly half took over a week to fix.
At the viewing: Connect your phone, use the screens, and check every electrical item.
- Rattles and trim buzzesAll engines
Rattling parcel shelves and buzzing trim are reported.
At the viewing: Drive on a rough road and listen.
Looking at an Audi RS 6 Crbn BLK Tfsi Mhev Quat A?
Check the actual car: its own MOT history, mileage and what to ask the seller. Free, no sign-up.
Other years
| Year | MOT tests | Most flagged |
|---|---|---|
| 2021 | 142 | Tyres 16% |
Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2020 Audi RS 6 Crbn BLK Tfsi Mhev Quat As registered in 2020. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score