Harley Davidson Fat Boy
MotorcycleFrom 290 MOT tests. Above average for its class.
Common MOT failure categories
What goes wrong?
The most common MOT failure reasons are excessive fluctuation in brake effort through each wheel revolution, number plate showing an incorrect registration and rear registration plate lamp does not illuminate simultaneously with the position lamps. The top issue, excessive fluctuation in brake effort through each wheel revolution, caused 4 failures in 2024. If you need repairs before retesting, sites like BookMyGarage let you compare local prices.
| excessive fluctuation in brake effort through each wheel revolution | 4 |
| number plate showing an incorrect registration | 3 |
| rear registration plate lamp does not illuminate simultaneously with the position lamps | 2 |
| a wheel spindle locking device missing or ineffective | 2 |
| significant brake effort recorded with no brake applied indicating a binding brake | 2 |
| a wheel bearing so rough it is likely to overheat or break up | 1 |
| a mandatory tell-tale for direction indicators missing or inoperative | 1 |
| number plate does not conform to the specified requirements | 1 |
| a stop lamp(s) remains on when the brakes are released | 1 |
| the aim of a headlamp is not within limits laid down in the requirements | 1 |
How serious are these failures?
Not all MOT failures are equal. Only 33.3% of Fat Boy failures are serious (safety or roadside), below the 44.4% average. When this car fails its MOT, it's more likely to be lights, wipers, or emissions than something dangerous. When it does fail, the average repair bill is around £78.
Typical mileage
Half of all Fat Boys tested had between 12,923 and 30,466 miles on the clock. Relatively low mileage overall. Many are still fairly young.
At 20,668 median miles, the Fat Boy has 0.063 failures per 10,000 miles driven.
Other Harley Davidson models
Common questions
What is the Harley Davidson Fat Boy MOT pass rate?
The Harley Davidson Fat Boy has a 86.9% MOT pass rate based on 290 real MOT tests. This is above the national average.
What are common MOT failures on a Harley Davidson Fat Boy?
The most common MOT failure on the Harley Davidson Fat Boy is excessive fluctuation in brake effort through each wheel revolution, which caused 4 failures. Other common issues include number plate showing an incorrect registration.
What is the typical mileage of a Harley Davidson Fat Boy at MOT?
The median mileage at MOT for a Harley Davidson Fat Boy is 20,668 miles. The middle 50% of vehicles tested have between 12,923 and 30,466 miles.
MOT data from DVSA anonymised test results, 2024 test year. Fleet data from DfT vehicle licensing statistics. Crown copyright, OGL v3.0. MOT pass rates are statistical summaries of test outcomes, not assessments of individual vehicle safety or condition. Always inspect a vehicle and check its full MOT history before purchasing. See terms of use.