4,999 tests in 2025
Hyundai Bayon reliability and MOT pass rate
89.1% passed first time. The 10.9% fail rate is 11.7 points better than the all-car average, on a median example 3 years old with 21,436 miles.
Pass rate
89.1%
22.6% of all cars failed; 10.9% of these did.
Fixed on the day
4.2%
Passed after a defect was put right during the visit.
Median at test
21,436 mi
3 years old.
Fail rate by age
| Age at test | Tests | Fail rate |
|---|---|---|
| 3-5 years | 4,699 | 11.2% |
| 6-9 years | 0 | — |
| 10-13 years | 0 | — |
| 14+ years | 0 | — |
What the Bayon 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.
- Visibility51%
- Tyres86 dangerous25%
- Brakes61 dangerous16.9%
- Lamps, reflectors and electrical equipment12.2%
- Seat belts and supplementary restraint systems5.5%
- Suspension8 dangerous4.6%
- Body, chassis, structure2.4%
- Noise, emissions and leaks2.2%
The exact defects that fail it
Every failure item DVSA recorded against a Bayon in 2025, counted by how many tests each one appeared on.
- 1Wipers: does not clear the windscreen effectively230 tests
- 2Condition: has a cut in excess of the requirements deep enough to reach the ply or cords65 tests
- 3Washers: provides insufficient washer liquid31 tests
- 4Tread depth: tread depth below requirements of 1.6mm31 tests
- 5Brake pads: less than 1.5 mm thick30 tests
- 6Brake pads: incorrectly mounted17 tests
- 7Rbt (sp): efficiency below requirements17 tests
- 8Condition: has ply or cords exposed16 tests
What wears out first
Advisories are the tester flagging wear that is still legal. A typical Bayon collects 1.82 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 1.6mm397 tests
- 2Condition: has a tear, caused by separation or partial failure of its structure268 tests
- 3Brake discs: in such a condition that it is seriously weakened177 tests
- 4Non-component advisories: Nail in tyre145 tests
- 5Non-component advisories: Child Seat fitted not allowing full inspection of adult belt107 tests
- 6Brake pads: less than 1.5 mm thick101 tests
- 7Condition: has a cut in excess of the requirements deep enough to reach the ply or cords89 tests
- 8Tread depth: tread pattern not visible over the whole tread area when minimum depth required is 1.0mm57 tests
Questions
What is the Hyundai Bayon MOT pass rate?
89.1% of the 4,999 Hyundai Bayon first-attempt MOTs in 2025 passed. The fail rate of 10.9% compares with 22.6% across all cars. A further 4.2% passed after a defect was fixed during the test visit.
What does a Hyundai Bayon usually fail on?
The single most common failure is "Wipers: does not clear the windscreen effectively", recorded on 230 failed tests, followed by "Condition: has a cut in excess of the requirements deep enough to reach the ply or cords" and "Washers: provides insufficient washer liquid". By section, visibility appears in 51% of failures, tyres appears in 25% of failures, brakes appears in 16.9% of failures.
Does age change the odds?
Sharply. At 3 to 5 years old the fail rate was 11.2%; at 3-5 years it was 11.2%. The median Hyundai Bayon tested in 2025 was 3 years old with 21,436 miles.
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 Bayon 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 Hyundai models
Checking a particular Bayon?
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.