Mazda BT-50 MOT pass rate and common failures
In 2025, 59.3% of Mazda BT-50 MOT tests were a first-time pass, across 747 tests in Great Britain. For all cars it was 71.5%.
Compared with cars of the same age
Older cars fail more often, so a model that’s mostly a few years old will look better than one that’s mostly 12. These figures compare like with like.
At 3–5 years
–
Too few tests at this age to say.
At 6–10 years
–
Too few tests at this age to say.
At 11 years and over
59.8%
All cars: 61.3% (1.5 points worse). 729 tests.
Pass rate by age
Figures by age, with typical mileage
| Age (years) | Tests | First-time pass | All cars | Typical mileage |
|---|---|---|---|---|
| 15 | 149 | 65.8% | 58.6% | 108,750 miles |
| 16 | 206 | 63.1% | 57.5% | 116,250 miles |
| 17 | 242 | 55.8% | 57.2% | 121,250 miles |
| 18 | 132 | 55.3% | 57.0% | 123,750 miles |
Typical mileage is the median reading at the test, to the nearest 2,500 miles.
What fails most often
The share of Mazda BT-50 MOT tests that failed on at least one item in each area, against all cars. A test can fail on several areas at once.
| Area | BT-50 | All cars |
|---|---|---|
| Lamps, reflectors and electrical equipment | 41.0% | 16.6% |
| Brakes | 22.1% | 10.2% |
| Body, chassis, structure | 21.4% | 4.2% |
| Suspension | 19.8% | 13.7% |
| Visibility | 7.6% | 5.2% |
| Noise, emissions and leaks | 7.0% | 4.0% |
| Tyres | 3.9% | 8.4% |
| Steering | 3.7% | 2.5% |
Most common reasons for failing
- Rigid brake pipes: excessively corroded failed 9.6% of tests · what this means
- Position lamp: not working failed 7.5% of tests · what this means
- Chassis condition: or chassis has excessive corrosion, seriously affecting its strength within 30cm of a body mounting failed 5.0% of tests · what this means
- Headlamp aim: projected beam image is obviously incorrect failed 4.8% of tests · what this means
- Rear fog lamp: not working failed 4.7% of tests · what this means
- Wipers: does not clear the windscreen effectively failed 4.4% of tests · what this means
- Component mounting prescribed areas: prescribed area excessively corroded significantly reducing structural strength failed 4.0% of tests
- Chassis condition: corroded to the extent that the rigidity of the assembly is significantly reduced failed 3.3% of tests · what this means
- Headlamp: not working on dipped beam failed 3.2% of tests · what this means
- Stop lamp: not working failed 3.1% of tests · what this means
Checking a particular BT-50?
See its own MOT history, mileage record and advisories in plain English. Free, no sign-up.
About these figures
- They cover every BT-50 version DVSA records under this name (engines, trims and generations together), on its first MOT test of each visit. A “pass with rectification” (fixed within an hour) counts as a fail, as in DVSA’s own statistics.
- Cars under three years old are left out, because the few tested that young are mostly taxis.
- Fuel mix of the cars tested: diesel 99.7%, petrol 0.3%.
- A pass rate describes the model, not any one car. How a car has been looked after matters more.
Download these figures (CSV) · Other Mazda models · All makes
Source: DVSA anonymised MOT test data for 2025. Contains public sector information licensed under the Open Government Licence v3.0. Our own analysis; not produced or endorsed by DVSA.