Suzuki DL 645cc MOT pass rate and common failures
Suzuki DL 645cc motorcycles pass the MOT 91.44% of the time, measured across 864 tests in the DVSA record. A further 3.01% passed only after a defect was put right at the test station.
Calculated from DVSA records for Suzuki DL, 645-650cc.
What to check before the MOT
Built from this model's own failure record, not general advice.
- Start with has a serious fluid leak - it accounts for 31.3% of failed tests on this model.
- Then check tread depth is below minimum requirements of 1.0mm and inoperative in the case of a single lamp or all lamps, the next two most common reasons.
- The most common advisory is tread depth is below minimum requirements of 1.0mm (6% of all tests) - not a failure, but money you will spend sooner or later.
- Average recorded mileage at test is 23,357 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 | |
|---|---|---|---|
| 6-10 years | 91.7% | 699 | |
| 11-15 years | 90.73% | 151 |
Why the Suzuki DL 645cc 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 | Has a serious fluid leak | 31.3% | 15 | |
| 2 | Tread depth is below minimum requirements of 1.0mm | 25% | 12 | |
| 3 | Inoperative in the case of a single lamp or all lamps | 18.8% | 9 | |
| 4 | Less than 1.0 mm thick | 12.5% | 6 | |
| 5 | Does not illuminate simultaneously with the position lamp(s) | 8.3% | 4 | |
| 6 | Excessively binding | 8.3% | 4 | |
| 7 | Too high | 8.3% | 4 | |
| 8 | Too low | 8.3% | 4 | |
| 9 | Unable to be tested | 8.3% | 4 | |
| 10 | Excessively loose | 6.3% | 3 |
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 | Tread depth is below minimum requirements of 1.0mm | 6% | 52 | |
| 2 | Less than 1.0 mm thick | 4.2% | 36 | |
| 3 | Has a serious fluid leak | 3.5% | 30 | |
| 4 | Excessively loose | 2.8% | 24 | |
| 5 | Noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition | 2.2% | 19 | |
| 6 | Excessively stiff or notchy | 1.9% | 16 | |
| 7 | Has excessive play | 1.6% | 14 | |
| 8 | Tread not clearly visible | 1.4% | 12 | |
| 9 | Worn to excess | 1.4% | 12 | |
| 10 | In such a condition that it is seriously weakened | 1.3% | 11 |
Suzuki DL 645cc for sale
No Suzuki DL 645cc in stock at the moment - 530 other Suzuki bikes are advertised.
Similar bikes compared
Models of comparable capacity, so the comparison means something.
| Model | Tests | Pass rate | Avg mileage | |
|---|---|---|---|---|
| Honda CB 397-750cc · 397-750cc | 5,400 | 89.76% | 19,444 | |
| Honda NC · 741cc | 5,311 | 89.53% | 22,765 | |
| Honda CBR600F · 599cc | 4,914 | 85.61% | 30,486 | |
| Suzuki GSF600 · 600cc | 4,890 | 80% | 29,308 | |
| Kawasaki ZX-6R · 599-636cc | 4,713 | 81.54% | 26,085 | |
| Royal Enfield INTERCEPTOR INT 650 · 649cc | 4,016 | 91.24% | 5,914 |
Source: DVSA MOT testing data, 2025 · updated Aug 2026 · licence and method