Mutt FAT SABBATH 125 MOT pass rate and common failures
Mutt FAT SABBATH 125 motorcycles pass the MOT 67.14% of the time, measured across 280 tests in the DVSA record. A further 12.86% passed only after a defect was put right at the test station.
What to check before the MOT
Built from this model's own failure record, not general advice.
- Start with not working - it accounts for 66.1% of failed tests on this model.
- Then check missing and excessively binding, the next two most common reasons.
- The most common advisory is noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (6.8% of all tests) - not a failure, but money you will spend sooner or later.
- Average recorded mileage at test is 4,593 miles, which is the number to compare any advert against.
Pass rate by age
A single pass rate hides the most useful thing in this data: how the same model behaves at three years old and at fifteen.
| Age at test | Pass rate | Tests | |
|---|---|---|---|
| 3-5 years | 68.01% | 272 |
Why the Mutt FAT SABBATH 125 fails
Share of failed tests on this model where the item was recorded. One test can fail on several items, so the column does not add up to 100%.
| # | Item | Of failures | Tests | |
|---|---|---|---|---|
| 1 | Not working | 66.1% | 37 | |
| 2 | Missing | 57.1% | 32 | |
| 3 | Excessively binding | 21.4% | 12 | |
| 4 | Does not illuminate by the operation of both brake controls | 16.1% | 9 | |
| 5 | Too high | 16.1% | 9 | |
| 6 | Less than 1.0 mm thick | 12.5% | 7 | |
| 7 | Too low | 12.5% | 7 | |
| 8 | The less effective brake control does not achieve an efficiency of 25% | 10.7% | 6 | |
| 9 | Insecure | 8.9% | 5 | |
| 10 | Excessively loose | 7.1% | 4 |
Most common advisories
Not a failure and not a legal requirement to fix - but an advisory that repeats year after year is money the next owner spends.
| # | Item | Of all tests | Tests | |
|---|---|---|---|---|
| 1 | Noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition | 6.8% | 19 | |
| 2 | Excessively loose | 4.3% | 12 | |
| 3 | Less than 1.0 mm thick | 4.3% | 12 | |
| 4 | Excessively binding | 3.2% | 9 | |
| 5 | Worn to excess | 3.2% | 9 | |
| 6 | Pin or bush excessively worn | 2.9% | 8 | |
| 7 | Has a major leak of exhaust gases | 2.5% | 7 | |
| 8 | Is bent and the brake cannot be readily applied | 2.5% | 7 | |
| 9 | Excessively deformed | 1.8% | 5 | |
| 10 | Excessively stiff or notchy | 1.8% | 5 |
Mutt FAT SABBATH 125 for sale
No Mutt FAT SABBATH 125 in stock at the moment - 0 other Mutt bikes are advertised.
Similar bikes compared
Models of comparable capacity, so the comparison means something.
| Model | Tests | Pass rate | Avg mileage | |
|---|---|---|---|---|
| Yamaha GPD125-A NMAX 125 · 125cc | 8,762 | 80.8% | 45,039 | |
| Piaggio VESPA 79-210cc · 79-210cc | 8,363 | 85.42% | 11,710 | |
| Honda WW · 125cc | 7,252 | 80.32% | 40,134 | |
| Honda WW 125 A-M · 125cc | 5,011 | 84.06% | 29,846 | |
| Honda GLR · 125cc | 4,737 | 79.99% | 14,642 | |
| Honda CBF 100-125cc · 100-125cc | 3,204 | 77% | 15,203 |
Source: DVSA MOT testing data, 2025 · updated Aug 2026 · licence and method