Harley-Davidson FXFBS FAT BOB 114 1868 18 MOT pass rate and common failures
Harley-Davidson FXFBS FAT BOB 114 1868 18 motorcycles pass the MOT 92.64% of the time, measured across 258 tests in the DVSA record. A further 4.65% 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 missing - it accounts for 100% of failed tests on this model.
- Then check does not conform to the specified requirements and indicates excessive fluctuation of brake effort, 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 (20.2% of all tests) - not a failure, but money you will spend sooner or later.
- Average recorded mileage at test is 9,968 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 | 92.61% | 257 |
Why the Harley-Davidson FXFBS FAT BOB 114 1868 18 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 | Missing | 100% | 9 | |
| 2 | Does not conform to the specified requirements | 100% | 7 | |
| 3 | Indicates excessive fluctuation of brake effort | 28.6% | 2 | |
| 4 | Obviously incorrectly positioned | 28.6% | 2 | |
| 5 | Has a serious fluid leak | 14.3% | 1 | |
| 6 | Inoperative in the case of a single lamp or all lamps | 14.3% | 1 | |
| 7 | Inoperative in the case of multiple lamps or light sources | 14.3% | 1 | |
| 8 | Not working | 14.3% | 1 | |
| 9 | Remains on when the brakes are released | 14.3% | 1 | |
| 10 | So rough it is likely to overheat or break up | 14.3% | 1 |
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 | 20.2% | 52 | |
| 2 | Indicates excessive fluctuation of brake effort | 7% | 18 | |
| 3 | Tread depth is below minimum requirements of 1.0mm | 5.4% | 14 | |
| 4 | Less than 1.0 mm thick | 1.6% | 4 | |
| 5 | Has a serious fluid leak | 0.8% | 2 | |
| 6 | Excessively tight | 0.4% | 1 | |
| 7 | In such a condition that it is seriously weakened | 0.4% | 1 | |
| 8 | Incorrect which adversely affects the handling | 0.4% | 1 | |
| 9 | Tread not clearly visible | 0.4% | 1 | |
| 10 | Worn to excess | 0.4% | 1 |
Harley-Davidson FXFBS FAT BOB 114 1868 18 for sale
No Harley-Davidson FXFBS FAT BOB 114 1868 18 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 | |
|---|---|---|---|---|
| Suzuki GSX1400 · 1,402cc | 2,352 | 91.54% | 26,720 | |
| Triumph THUNDERBIRD 1600 · 1500-1800cc | 1,767 | 89.3% | 16,841 | |
| Harley-Davidson FLSTF · 1,507cc | 1,568 | 91.52% | 20,653 | |
| BMW K 1600 · 1,649cc | 1,484 | 95.62% | 19,181 | |
| Harley-Davidson FLSTC · 1,503cc | 1,202 | 91.43% | 25,624 | |
| Kawasaki ZX 1352-1441cc · 1352-1441cc | 1,014 | 90.73% | 19,713 |
Source: DVSA MOT testing data, 2025 · updated Aug 2026 · licence and method