| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 98 |
| Headlamp aim out of alignment | 88 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 70 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 48 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 43 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 37 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 34 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 34 |
| Steering headbearing has excessive free play |2.2.2| | 33 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 31 |
| Nearside Steering lock stop ineffective |2.1.3| | 27 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 24 |
| Nearside Indicator tell tale not functioning |1.5.2| | 22 |
| Riders seat insecure |6.2.1a| | 18 |
| Offside Steering lock stop ineffective |2.1.3| | 18 |
| Headlamp switch faulty |1.2.4| | 17 |
| Fuel cap sealing washer missing |7.2.2c| | 17 |
| Exhaust excessively deteriorated |7.1.1a| | 16 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 14 |
| Throttle operating incorrectly |6.2.1f| | 14 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 14 |
| Horn not working |1.7.3a| | 12 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 11 |
| Rear reflector on motorcycle obscured |1.4.1| | 11 |
| Front suspension has inadequate damping effect. |2.3.6c| | 11 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 10 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 10 |
| Nearside Indicator tell tale not operating correctly |1.5.2| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 8 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 8 |
| Headlamp aim not tested |1.6| | 8 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 7 |
| Indicator tell tale not functioning |1.5.2| | 7 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 7 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Indicator switch defective |1.5.4| | 6 |
| Registration plate issues | 6 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 5 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 5 |
| Nearside Steering lock stop missing |2.1.3| | 5 |
| Offside Rear Footrest missing |6.2.1a| | 5 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Steering lock stop ineffective |2.1.3| | 5 |
| Offside Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 5 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Front Headlamp switch faulty |1.2.4| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Front suspension assembly component excessively bent |2.3.1| | 4 |
| Front suspension assembly component excessively corroded. |2.3.1| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Indicator tell tale not operating correctly |1.5.2| | 4 |
| Fuel system component leaking |7.2.1a| | 4 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 3 |
| Offside Steering lock stop maladjusted |2.1.3| | 3 |
| Rear position lamp insecure |1.1.1c| | 3 |
| Nearside Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 3 |
| Horn is not continous or uniform |1.7.3c| | 3 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| An item not tested |Manual| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Front Riders seat insecure |6.2.1a| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |