Harley-Davidson FXSB MOT pass rate and common failures
Harley-Davidson FXSB motorcycles pass the MOT 88.71% of the time, measured across 859 tests in the DVSA record. A further 6.05% 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 48.9% of failed tests on this model.
- Then check missing and remains on when the brakes are released, 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 (29.1% of all tests) - not a failure, but money you will spend sooner or later.
- Average recorded mileage at test is 11,767 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 | 88.65% | 696 | |
| 11-15 years | 88.67% | 150 |
Why the Harley-Davidson FXSB 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 | 48.9% | 22 | |
| 2 | Missing | 48.9% | 22 | |
| 3 | Remains on when the brakes are released | 44.4% | 20 | |
| 4 | Not working | 26.7% | 12 | |
| 5 | Obviously incorrectly positioned | 11.1% | 5 | |
| 6 | Incorrect | 8.9% | 4 | |
| 7 | Too low | 8.9% | 4 | |
| 8 | Tread depth is below minimum requirements of 1.0mm | 8.9% | 4 | |
| 9 | Does not illuminate simultaneously with the position lamp(s) | 6.7% | 3 | |
| 10 | Incorrect colour | 6.7% | 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 | Noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition | 29.1% | 250 | |
| 2 | Less than 1.0 mm thick | 6.3% | 54 | |
| 3 | Tread depth is below minimum requirements of 1.0mm | 6.3% | 54 | |
| 4 | Indicates excessive fluctuation of brake effort | 2.3% | 20 | |
| 5 | Excessively stiff or notchy | 1% | 9 | |
| 6 | Tread not clearly visible | 0.9% | 8 | |
| 7 | Has a serious fluid leak | 0.6% | 5 | |
| 8 | Excessively binding | 0.3% | 3 | |
| 9 | Inscription illegible | 0.2% | 2 | |
| 10 | Is so short that the brake cannot be readily applied | 0.2% | 2 |
Harley-Davidson FXSB for sale
No Harley-Davidson FXSB 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 R1250 · 1,254cc | 6,764 | 96.17% | 17,373 | |
| Triumph BONNEVILLE 1200cc · 1196-1200cc | 5,527 | 91.62% | 8,342 | |
| Yamaha XJR1300 · 1,251cc | 3,805 | 90.43% | 26,274 | |
| BMW K SERIES 960-1393cc · 960-1393cc | 3,695 | 89.23% | 38,457 | |
| BMW R 1250 GS ADVENTURE TE · 1,254cc | 2,946 | 96.33% | 12,375 | |
| BMW R 1250 GS TE · 1,254cc | 2,512 | 96.46% | 12,060 |
Source: DVSA MOT testing data, 2025 · updated Aug 2026 · licence and method