League table/MUTT
Make report · 2005–2025
MUTT
71.3%
first-time pass rate
17.6%
failed outright
6,238
MOT tests, 2005–2025
MUTT at a glance
Most reliable model
QM 250-2X MONGREL 250
84.5% pass
Least reliable model
DESERT RACER 125
65.4% pass
Most tested model
MONGREL 125
3,527 tests
Among MUTT models with ≥ 100 tests.
What fails a MUTT
failure defects across all MUTT models · advisories excluded
lamps and reflectors is MUTT's most common failure — 11.8% of all MUTT tests record one.
| Component group | Share of defects | % of tests | Worst offenders |
|---|---|---|---|
| lamps and reflectors |
|
11.8 | see ranking |
| brakes |
|
6.9 | see ranking |
| structure and attachments |
|
4.7 | see ranking |
| suspension |
|
2.7 | see ranking |
| steering |
|
1.7 | see ranking |
Top failure groups aggregated across every MUTT model, 2005–2025. "% of tests" = share of the make's tests recording at least one defect in that group.
MUTT models, ranked by test volume
10 models with ≥ 100 normal tests, 2005–2025
| Model | Pass rate | Pass % | Fail % | Median miles | Tests |
|---|---|---|---|---|---|
| MONGREL 125 |
|
69.0 | 19.9 | 3,762 | 3,527 |
| FAT SABBATH 125 |
|
69.7 | 18.6 | 3,044 | 591 |
| QM 250-2X MONGREL 250 |
|
84.5 | 7.1 | 2,840 | 453 |
| HILTS 125 |
|
76.1 | 12.9 | 2,146 | 326 |
| AKITA 125 |
|
72.7 | 19.4 | 2,623 | 216 |
| MASTIFF 125 |
|
67.8 | 22.9 | 3,153 | 214 |
| DESERT RACER 125 |
|
65.4 | 16.2 | 4,225 | 191 |
| FSR 125 |
|
69.4 | 18.1 | 2,904 | 144 |
| RAZORBACK 125 |
|
67.6 | 16.2 | 2,447 | 111 |
| SABBATH 250 |
|
84.4 | 7.3 | 2,187 | 109 |
Normal tests only. Median miles is odometer reading at test where recorded. Source: DVSA anonymised MOT results, 2005–2025.