Harley-Davidson FXDF MOT pass rate and common failures
Harley-Davidson FXDF motorcycles pass the MOT 89.26% of the time, measured across 447 tests in the DVSA record. A further 5.15% 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 does not conform to the specified requirements - it accounts for 40% of failed tests on this model.
- Then check remains on when the brakes are released and missing, 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 (23.3% of all tests) - not a failure, but money you will spend sooner or later.
- Average recorded mileage at test is 21,355 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 | |
|---|---|---|---|
| 11-15 years | 87.14% | 241 | |
| 16+ years | 91.75% | 206 |
Why the Harley-Davidson FXDF 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 | Does not conform to the specified requirements | 40% | 10 | |
| 2 | Remains on when the brakes are released | 40% | 10 | |
| 3 | Missing | 32% | 8 | |
| 4 | Not working | 28% | 7 | |
| 5 | Does not illuminate by the operation of both brake controls | 16% | 4 | |
| 6 | Too low | 16% | 4 | |
| 7 | Excessively binding | 12% | 3 | |
| 8 | Too high | 12% | 3 | |
| 9 | Has a serious fluid leak | 8% | 2 | |
| 10 | Light intensity obviously reduced | 8% | 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 | 23.3% | 104 | |
| 2 | Tread depth is below minimum requirements of 1.0mm | 3.4% | 15 | |
| 3 | Less than 1.0 mm thick | 2.7% | 12 | |
| 4 | Indicates excessive fluctuation of brake effort | 2.5% | 11 | |
| 5 | Has a serious fluid leak | 1.6% | 7 | |
| 6 | Excessively stiff or notchy | 1.1% | 5 | |
| 7 | Tread not clearly visible | 1.1% | 5 | |
| 8 | Has excessive play | 0.7% | 3 | |
| 9 | Has a major leak of exhaust gases | 0.4% | 2 | |
| 10 | In such a condition that it is seriously weakened | 0.4% | 2 |
Harley-Davidson FXDF for sale
No Harley-Davidson FXDF in stock at the moment - 48 other Harley-Davidson bikes are advertised.
Similar bikes compared
Models of comparable capacity, so the comparison means something.
| Model | Tests | Pass rate | Avg mileage | |
|---|---|---|---|---|
| BMW R SERIES · 1,152cc | 9,796 | 91.92% | 40,594 | |
| BMW R1200 · 1,170cc | 9,521 | 94.43% | 28,830 | |
| BMW R1250 · 1,254cc | 6,764 | 96.17% | 17,373 | |
| BMW R 1200 · 1,170cc | 6,170 | 95.28% | 27,241 | |
| Triumph BONNEVILLE 1200cc · 1196-1200cc | 5,527 | 91.62% | 8,342 | |
| Suzuki GSF1200 · 1,159cc | 4,061 | 84.68% | 29,337 |
Source: DVSA MOT testing data, 2025 · updated Aug 2026 · licence and method