| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Throttle operating incorrectly |6.2.1f| | 8 |
| Registration plate issues | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Horn not working |1.7.3a| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front position lamp insecure |1.1.1c| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Rear spring worn and seriously weakened |2.4A1b|ii|| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Centre Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Footrest missing |6.2.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Central Lower Exhaust excessively deteriorated leaking |7.1.1a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Stop lamp|s| not working |4.3.1 |a| |ii|| | 1 |
| Brake master cylinder leaking |1.1.10 |b| |ii|| | 1 |
| Offside Rear Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Central Front Service brake excessively fluctuating |1.2.1 |e|| | 1 |
| Front Brake lever cannot be released smoothly |9.3.1h| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Hazard warning switch insecure |1.4.B.1d| | 1 |
| Rear Brake fluid significantly below minimum mark |1.1.10 |d| |ii|| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected very stiff holds open (6.2.7 (a) (ii)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected split pin missing (5.2.1 (c) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Fuel hose insecure on fuel pump (6.1.3 (a) (i)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Throttle operating incorrectly not closing (6.2.7 (a) (i)) | 1 |