MUTT DESERT RACER 125
The pass rate is the MOT first-time pass: a roadworthiness check of the items an MOT covers (brakes, lights, tyres, steering, structure, emissions), not a full mechanical inspection of engine or gearbox internals. It is a reliability signal, not a complete measure of mechanical reliability. What this measures.
“vs expected” adjusts for age, mileage and test class, so a cherished classic and a hard-used commuter are compared fairly. How this works.
Pass rate over time
The DESERT RACER 125's first-time pass rate has risen 9.6 points since 2020, 56.1% to 65.7%.
What fails on a DESERT RACER 125
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lamps and reflectors |
|
51 | 51.5 |
| structure and attachments |
|
19 | 19.2 |
| steering |
|
9 | 9.1 |
| suspension |
|
8 | 8.1 |
| Identification of the vehicle |
|
4 | 4 |
| tyres |
|
4 | 4 |
| brakes |
|
3 | 3 |
| wheels |
|
1 | 1 |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.
Compare with any bike
More MUTT models
Pass rate by registration year
Best year to buy used: 2017 (71.6% pass). Weakest: 2016 (63.6%).
First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.
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