2021 Toyota GR Yaris 4WD: common problems and what to check
What gets flagged at MOT on 2021 Toyota GR Yaris 4WDs, from 131 tests in 2025, plus known faults and what to look at before you buy one.
Small sample: only 131 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 2021 Toyota GR Yaris 4WD MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.
- Tyres13% 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.
- Brakes4% 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 emissions2% 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.
- Seats and seatbelts1% of testsRough price £80–£250
At the viewing: Pull each seatbelt sharply. It should lock, and retract cleanly.
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Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2021 Toyota GR Yaris 4WDs registered in 2021. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score