Used car guide

2021 Toyota GR Yaris Convenience 4WD: common problems and what to check

What gets flagged at MOT on 2021 Toyota GR Yaris Convenience 4WDs, from 144 tests in 2025, plus known faults and what to look at before you buy one.

Small sample: only 144 of these were MOT tested in 2025, so treat the percentages as rough. The known faults below don't depend on it.

144MOT tests in 2025
94%pass first time (all 2021 cars: 87%)
4,600typical miles a year
15%had tyres flagged

What gets flagged at MOT

The share of 2021 Toyota GR Yaris Convenience 4WD MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Tyres
    15% 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.

  • Brakes
    3% 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.

  • Wipers, windscreen and mirrors
    3% of testsRough price £15–£250

    At the viewing: Check for chips in the driver's view, and test the wipers and washers.

  • Lights and electrics
    1% of testsRough price £10–£80

    At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.

  • Exhaust and emissions
    1% 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.

  • Suspension
    1% 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.

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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 Convenience 4WDs registered in 2021. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score