2020 Audi A4 Allroad: common problems and MOT failures
What MOT testers find on the Audi A4 Allroad first registered in 2020: we looked at the 421 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.
Small sample: there were only 421 MOTs of these cars during 2023–2025, so treat the percentages as rough. The known faults below don't depend on it.
Common 2020 Audi A4 Allroad MOT failures and advisories
The share of 2020 Audi A4 Allroad MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.
- Tyres17% 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.
- Brakes10% 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.
- Suspension6% 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.
- 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.
- Lights and electrics2% of testsRough price £10–£80
At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.
- Driveshafts and joints1% of testsRough price £60–£350
At the viewing: On full steering lock, drive slowly and listen for clicking from the front wheels.
Known faults on the 2020 Audi A4 Allroad
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.
- Mild-hybrid models
Starter-alternator recall (mild hybrids)
Moisture could get into the starter-alternator on mild-hybrid cars, which led to two recalls in 2020.
At the viewing: Ask an Audi dealer or the seller to confirm the recall work was done.
- All engines
Seat and airbag recalls
There were recalls for front seats and seat frames, and for airbags and seatbelt pre-tensioners that might not work.
At the viewing: Make sure the airbag light goes out, and ask for proof of recall work.
- All engines
Stop-start problems
Some owners report problems with the stop-start system.
At the viewing: Watch the engine stop and restart smoothly at junctions, with no warning lights.
- All engines
Trim rattles
Rattles from the cabin trim are a common complaint.
At the viewing: Drive on a rough road and listen around the dashboard and doors.
- Avant estate
Powered tailgate faults (Avant)
The powered tailgate on Avant estates can play up.
At the viewing: Open and close it several times with the button and the key.
Questions to ask the seller before buying a 2020 Audi A4 Allroad
Ask before you travel to see it. A seller who knows the car will have answers, and receipts.
- Can I see the service history and receipts for any big jobs?
Looking at an Audi A4 Allroad?
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Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of Audi A4 Allroad cars first registered in 2020. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score