| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Registration plate issues | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Rear Brake lever mounting insecure |3.1.2a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Headlamp insecure |1.2.3b| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Position lamp switch insecure |1.1.4b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Nearside Front Lower Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Lower Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Centre Upper Horn is not a constant note |1.7.3c| | 1 |
| Nearside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Upper Direction indicator not working |1.5.1c| | 1 |
| Offside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Upper Direction indicator not working |1.5.1c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Offside Front Upper Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Upper Brake lever insecure |3.1.2a| | 1 |
| Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Direction indicator obscured |1.5.1a| | 1 |
| Offside Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |