League table/THUMPSTAR
Make report · 2005–2025
THUMPSTAR
66.0%
first-time pass rate
24.5%
failed outright
432
MOT tests, 2005–2025
THUMPSTAR at a glance
Most reliable model
ROAD RIPPER
69.0% pass
Least reliable model
ROAD RIPPER 125
68.8% pass
Most tested model
ROAD RIPPER 125
240 tests
Among THUMPSTAR models with ≥ 100 tests.
What fails a THUMPSTAR
failure defects across all THUMPSTAR models · advisories excluded
lighting and signalling is THUMPSTAR's most common failure — 11.8% of all THUMPSTAR tests record one.
| Component group | Share of defects | % of tests | Worst offenders |
|---|---|---|---|
| lighting and signalling |
|
11.8 | see ranking |
| brakes |
|
8.1 | see ranking |
| lamps and reflectors |
|
5.8 | see ranking |
| steering and suspension |
|
7.6 | see ranking |
| structure and attachments |
|
2.5 | see ranking |
Top failure groups aggregated across every THUMPSTAR model, 2005–2025. "% of tests" = share of the make's tests recording at least one defect in that group.
THUMPSTAR models, ranked by test volume
2 models with ≥ 100 normal tests, 2005–2025
| Model | Pass rate | Pass % | Fail % | Median miles | Tests |
|---|---|---|---|---|---|
| ROAD RIPPER 125 |
|
68.8 | 21.7 | 524 | 240 |
| ROAD RIPPER |
|
69.0 | 20.0 | 648 | 100 |
Normal tests only. Median miles is odometer reading at test where recorded. Source: DVSA anonymised MOT results, 2005–2025.