Used car guide

2021 Kia Stonic hybrid: common problems and MOT failures

What MOT testers find on the hybrid Kia Stonic first registered in 2021 (hybrid cars only): we looked at the 5,331 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

5,331MOTs of 2021 hybrid cars, done in 2023–2025
92%pass first time (all 2021 cars: 87%)
6,400typical miles a year
15%had tyres flagged

Common 2021 Kia Stonic hybrid MOT failures and advisories

The share of 2021 Kia Stonic hybrid 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
    8% 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
    7% 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
    2% of testsRough price £10–£80

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

  • Seats and seatbelts
    2% of testsRough price £80–£250

    At the viewing: Pull each seatbelt sharply. It should lock, and retract cleanly.

  • Suspension
    2% 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.

Questions to ask the seller before buying a 2021 Kia Stonic hybrid

Ask before you travel to see it. A seller who knows the car will have answers, and receipts.

  1. Can I see the service history and receipts for any big jobs?

Looking at a Kia Stonic?

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Other years

Every year of the Kia Stonic compared

YearMOT testsMost flagged
2026–Too new for MOT data
2025–Too new for MOT data
2024–Too new for MOT data
2023329Tyres 7%
20225,666Tyres 15%
202013,178Tyres 16%
201924,084Tyres 21%
201820,200Tyres 25%
20172,140Brakes 25%

Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of Kia Stonic cars first registered in 2021. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score