| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 5 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Front mudguard insecure |2.3.7| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Exhaust has a major leak of exhaust gases bolt missing (6.1.2 (a)) | 1 |
| Horn not working intermitent (7.7 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Centre Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies rear switch |1.3.1a| | 1 |
| Nearside Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Upper Front suspension assembly component loose |2.3.1| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Lower Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Rear Lower Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Brake linkage has abnormal movement due to excessive wear not returning |3.2.A1i| | 1 |
| Rear Floor brake test indicates a severely grabbing brake binding rear wheel |3.3.C2d| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket carrier worn to excess rubber and locking nuts lose |6.2.1e| | 1 |
| Front Headlamp switch insecure |1.2.4| | 1 |
| Lower Exhaust mounting does not fully support the exhaust system rear box |7.1.1.c| | 1 |
| Centre Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |