League table/MASH
Make report · 2005–2025
MASH
77.6%
first-time pass rate
13.1%
failed outright
2,546
MOT tests, 2005–2025
MASH at a glance
Most reliable model
XY
86.4% pass
Least reliable model
BLACK 7
65.1% pass
Most tested model
XY
653 tests
Among MASH models with ≥ 100 tests.
What fails a MASH
failure defects across all MASH models · advisories excluded
lamps and reflectors is MASH's most common failure — 8.4% of all MASH tests record one.
| Component group | Share of defects | % of tests | Worst offenders |
|---|---|---|---|
| lamps and reflectors |
|
8.4 | see ranking |
| brakes |
|
4.4 | see ranking |
| structure and attachments |
|
4.2 | see ranking |
| suspension |
|
2 | see ranking |
| steering |
|
1.2 | see ranking |
Top failure groups aggregated across every MASH model, 2005–2025. "% of tests" = share of the make's tests recording at least one defect in that group.
MASH models, ranked by test volume
6 models with ≥ 100 normal tests, 2005–2025
| Model | Pass rate | Pass % | Fail % | Median miles | Tests |
|---|---|---|---|---|---|
| XY |
|
86.4 | 6.0 | 4,544 | 653 |
| FIFTY |
|
71.3 | 16.8 | 4,430 | 345 |
| BLACK 7 |
|
65.1 | 26.6 | 4,033 | 241 |
| XY 400-2 |
|
79.8 | 7.2 | 2,907 | 208 |
| FIFTY 50 |
|
65.6 | 23.7 | 4,261 | 131 |
| BLACK SEVEN 125 |
|
65.6 | 16.8 | 3,240 | 125 |
Normal tests only. Median miles is odometer reading at test where recorded. Source: DVSA anonymised MOT results, 2005–2025.