Motorcycle reliability file
Harley-Davidson FXDF MOT pass rate & common failures
From 513 recorded MOT tests of the Harley-Davidson FXDF, published by DVSA.
Data updated
Quick answer
The Harley-Davidson FXDF passes 89.3% of MOT tests, against 86.5% for all motorcycles. The most recorded failure is "A stop lamp(s) remains on when the brakes are released", in 23.1% of failed tests.
At a glance
Recorded pass rate
2.7 points above the fleet average of 86.5%. The examples tested do not cover a wide enough spread of ages and mileages to compare fairly against the rest of the fleet, so no rank is claimed; the failure record below stands on its own.
DVSA recorded wording
Most common failure items
Share of failed Harley-Davidson FXDF tests in which each item was recorded. One failed test often lists several, so these do not sum to 100%.
- 1.A stop lamp(s) remains on when the brakes are released23.1%
6 occurrences
- 2.Number plate does not conform to the specified requirements19.2%
5 occurrences
- 3.Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning15.4%
4 occurrences
- 4.A stop lamp(s) does not illuminate by the operation of both brake controls or remains on when the brakes are released11.5%
3 occurrences
- 5.Excessive fluctuation in brake effort through each wheel revolution7.7%
2 occurrences
- 6.A wheel bearing excessively rough7.7%
2 occurrences
- 7.Reflector missing or reflecting white to the rear7.7%
2 occurrences
- 8.A shock absorber not functioning or leaking severely7.7%
2 occurrences
- 9.Projected beam image is obviously incorrect7.7%
2 occurrences
- 10.Tyre tread depth not in accordance with the requirements3.8%
1 occurrences
- 11.The aim of a headlamp is not within limits laid down in the requirements3.8%
1 occurrences
- 12.The aim of a headlamp is not within limits laid down in the requirements3.8%
1 occurrences
Warnings without a failure
Most common advisories
Share of all Harley-Davidson FXDF tests carrying each advisory.
- 1.Exhaust noise levels in excess of those permitted23.0%
118 tests
- 2.Tyre tread depth not in accordance with the requirements3.9%
20 tests
- 3.Brake lining or pad worn below 1.0mm2.9%
15 tests
- 4.Excessive fluctuation in brake effort through each wheel revolution2.5%
13 tests
- 5.A shock absorber not functioning or leaking severely1.6%
8 tests
- 6.Tyre tread depth not in accordance with the requirements1.2%
6 tests
- 7.Steering head bearings excessively stiff, notchy, or with excessive wear or play1.2%
6 tests
- 8.Significant brake effort recorded with no brake applied indicating a binding brake0.6%
3 tests
What gets tested
The FXDF fleet
- Average mileage recorded at test
- 21,385
- Test classes
- class 2: 513
Compare within the range
Other Harley-Davidson motorcycles
- Harley Davidson XL87.9% raw
- Harley Davidson Flstf91.5% raw
- Harley-Davidson XLH 88387.5% raw
- Harley Davidson Flstc91.4% raw
- Harley Davidson FXSB88.7% raw
- Harley-Davidson XL88387.5% raw
- All Harley-Davidson motorcycles
Common questions
- What is the MOT pass rate for a Harley-Davidson FXDF?
- 89.3% unadjusted, from 513 DVSA tests. The average across all motorcycles is 86.5%.
- What does a Harley-Davidson FXDF fail its MOT on?
- "A stop lamp(s) remains on when the brakes are released" is recorded in 23.1% of failed Harley-Davidson FXDF tests, followed by "Number plate does not conform to the specified requirements" (19.2%). One failed test often lists several items.
- What mileage does a Harley-Davidson FXDF usually have at its MOT?
- 21,385 miles on average across every age tested, so a description of the fleet rather than an annual figure. Motorcycle mileages are low and vary enormously with use; a commuter bike and a weekend bike of the same age can differ by a factor of ten.
Analysis built from DVSA data of