2023 Kia Stonic: common problems and MOT failures
What MOT testers find on the Kia Stonic first registered in 2023: we looked at the 330 MOTs these cars had during 2025. Plus known faults and what to look at before you buy one.
Small sample: there were only 330 MOTs of these cars during 2025, so treat the percentages as rough. The known faults below don't depend on it.
Common 2023 Kia Stonic MOT failures and advisories
The share of 2023 Kia Stonic MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.
- Tyres7% 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.
- Brakes5% 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 mirrors3% 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.
- Seats and seatbelts1% of testsRough price £80–£250
At the viewing: Pull each seatbelt sharply. It should lock, and retract cleanly.
- 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.
Known faults on the 2023 Kia Stonic
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.
- Diesel
Particulate filter warning (diesel)
A DPF light that stays on can mean a blocked filter or a faulty sensor. No major issues are reported otherwise.
At the viewing: Make sure no DPF warning shows.
Questions to ask the seller before buying a 2023 Kia Stonic
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 a Kia Stonic?
Check the actual car: its own MOT history, mileage and what to ask the seller. Free, no sign-up.
Other years
Every year of the Kia Stonic compared
| Year | MOT tests | Most flagged |
|---|---|---|
| 2026 | – | Too new for MOT data |
| 2025 | – | Too new for MOT data |
| 2024 | – | Too new for MOT data |
| 2022 | 5,382 | Tyres 15% |
| 2021 | 5,107 | Tyres 19% |
| 2020 | 4,408 | Tyres 21% |
| 2019 | 8,207 | Brakes 23% |
| 2018 | 6,795 | Tyres 26% |
| 2017 | 722 | Tyres 28% |
Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2025, counting the MOTs of Kia Stonic cars first registered in 2023. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score