30,083 tests in 2025
Kia Stonic reliability and MOT pass rate
90.7% passed first time. The 9.3% fail rate is 13.3 points better than the all-car average, on a median example 5 years old with 32,493 miles.
Pass rate
90.7%
22.6% of all cars failed; 9.3% of these did.
Fixed on the day
3%
Passed after a defect was put right during the visit.
Median at test
32,493 mi
5 years old.
Fail rate by age
| Age at test | Tests | Fail rate |
|---|---|---|
| 3-5 years | 15,314 | 7.4% |
| 6-9 years | 14,467 | 11.4% |
| 10-13 years | 0 | — |
| 14+ years | 0 | — |
What the Stonic fails on
Share of failed tests with at least one fail item in each DVSA inspection section. A test can fail in several sections at once.
- Brakes825 dangerous32.7%
- Tyres659 dangerous27.8%
- Visibility23.7%
- Lamps, reflectors and electrical equipment2 dangerous11.8%
- Suspension12 dangerous11%
- Noise, emissions and leaks6%
- Steering3 dangerous3.4%
- Body, chassis, structure3 dangerous2.4%
Is the Stonic getting worse?
The fail rate rose 3.8 points to 9.5% from 2022 to 2025, against a rising rate across all cars.
| Year | Tests | Median age | Fail rate | All cars | |
|---|---|---|---|---|---|
| 2022 | 15,694 | 3 | 5.7% | 22.5% | |
| 2023 | 19,068 | 4 | 8% | 22.8% | |
| 2024 | 20,389 | — | 9.1% | 23.2% | |
| 2025 | 27,037 | — | 9.5% | 22.6% |
Fail rate is first attempts at class 4 tests. Median age is the age of a typical Stonic at its test that year, and it is the number to watch: across the whole fleet each extra year of age adds roughly 1.9 points to the fail rate, so a model whose age and fail rate rise together is simply getting older.
The exact defects that fail it
Every failure item DVSA recorded against a Stonic in 2025, counted by how many tests each one appeared on.
- 1Brake pads: less than 1.5 mm thick630 tests
- 2Wipers: does not clear the windscreen effectively398 tests
- 3Tread depth: tread depth below requirements of 1.6mm304 tests
- 4Condition: has a cut in excess of the requirements deep enough to reach the ply or cords251 tests
- 5Ball joint dust cover: ball joint dust cover no longer prevents the ingress of dirt169 tests
- 6Washers: provides insufficient washer liquid135 tests
- 7Washers: not working125 tests
- 8Headlamp: not working on dipped beam124 tests
What wears out first
Advisories are the tester flagging wear that is still legal. A typical Stonic collects 2.09 of them per test, and these are the ones that come up most. Treat it as the running-repairs list for the next year or two.
- 1Tread depth: tread depth below requirements of 1.6mm3,420 tests
- 2Brake pads: less than 1.5 mm thick3,224 tests
- 3Brake discs: in such a condition that it is seriously weakened1,858 tests
- 4Condition: has a tear, caused by separation or partial failure of its structure1,707 tests
- 5Brake discs: significantly and obviously worn960 tests
- 6Non-component advisories: Child Seat fitted not allowing full inspection of adult belt777 tests
- 7Non-component advisories: Nail in tyre712 tests
- 8Tread depth: tread pattern not visible over the whole tread area when minimum depth required is 1.0mm453 tests
Questions
What is the Kia Stonic MOT pass rate?
90.7% of the 30,083 Kia Stonic first-attempt MOTs in 2025 passed. The fail rate of 9.3% compares with 22.6% across all cars. A further 3% passed after a defect was fixed during the test visit.
What does a Kia Stonic usually fail on?
The single most common failure is "Brake pads: less than 1.5 mm thick", recorded on 630 failed tests, followed by "Wipers: does not clear the windscreen effectively" and "Tread depth: tread depth below requirements of 1.6mm". By section, brakes appears in 32.7% of failures, tyres appears in 27.8% of failures, visibility appears in 23.7% of failures.
Does age change the odds?
Sharply. At 3 to 5 years old the fail rate was 7.4%; at 6-9 years it was 11.4%. The median Kia Stonic tested in 2025 was 5 years old with 32,493 miles.
Is the Kia Stonic getting less reliable?
The fail rate rose 3.8 points to 9.5% from 2022 to 2025, against a rising rate across all cars.
First-attempt class 4 tests, 2025, from DVSA’s anonymised MOT data (OGL v3, retrieved 2026-09-12). DVSA records newer cars trim by trim; this page adds every Stonic trim together. Year-on-year figures come from the same DVSA extracts for 2026 and earlier years. Full method on the pass rates hub.
Other Kia models
Checking a particular Stonic?
The odds above are the model. The car in front of you has its own record: every test, every advisory, the mileage at each one.
Due a test? Find an approved MOT station near you.