Ducati M821 MOT pass rate and common failures
Ducati M821 motorcycles pass the MOT 87.56% of the time, measured across 418 tests in the DVSA record. A further 4.55% 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 indicates excessive fluctuation of brake effort - it accounts for 21.2% of failed tests on this model.
- Then check missing and has no recorded effort at a wheel, 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 (12.7% of all tests) - not a failure, but money you will spend sooner or later.
- Average recorded mileage at test is 8,371 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 | 87.96% | 108 | |
| 6-10 years | 87.42% | 310 |
Why the Ducati M821 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 | Indicates excessive fluctuation of brake effort | 21.2% | 7 | |
| 2 | Missing | 21.2% | 7 | |
| 3 | Has no recorded effort at a wheel | 18.2% | 6 | |
| 4 | The less effective brake control does not achieve an efficiency of 25% | 18.2% | 6 | |
| 5 | Has insufficient reserve travel | 12.1% | 4 | |
| 6 | Effort inadequate at a wheel | 9.1% | 3 | |
| 7 | Too high | 9.1% | 3 | |
| 8 | Does not conform to the specified requirements | 6.1% | 2 | |
| 9 | Does not illuminate by the operation of both brake controls | 6.1% | 2 | |
| 10 | Has a serious fluid leak | 6.1% | 2 |
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 | 12.7% | 53 | |
| 2 | Tread depth is below minimum requirements of 1.0mm | 8.1% | 34 | |
| 3 | Indicates excessive fluctuation of brake effort | 7.7% | 32 | |
| 4 | Excessively loose | 4.3% | 18 | |
| 5 | Worn to excess | 1.9% | 8 | |
| 6 | Has a serious fluid leak | 1.2% | 5 | |
| 7 | Less than 1.0 mm thick | 1% | 4 | |
| 8 | Tread not clearly visible | 1% | 4 | |
| 9 | Has an excessively worn bush | 0.7% | 3 | |
| 10 | Excessively tight | 0.5% | 2 |
Ducati M821 for sale
No Ducati M821 in stock at the moment - 49 other Ducati bikes are advertised.
Similar bikes compared
Models of comparable capacity, so the comparison means something.
| Model | Tests | Pass rate | Avg mileage | |
|---|---|---|---|---|
| Triumph TIGER · 969cc | 16,144 | 91.27% | 22,934 | |
| Triumph BONNEVILLE 642-904cc · 642-904cc | 12,456 | 90.8% | 12,824 | |
| BMW S 1000 · 999cc | 8,445 | 91.96% | 15,282 | |
| Yamaha YZF R1 · 998cc | 6,022 | 88.01% | 23,152 | |
| Yamaha MT 800-1000cc · 800-1000cc | 5,720 | 90.98% | 16,130 | |
| Honda NC · 741cc | 5,311 | 89.53% | 22,765 |
Source: DVSA MOT testing data, 2025 · updated Aug 2026 · licence and method