| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 99 |
| Drive chain excessively loose |6.2.1d| | 38 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 17 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 17 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 15 |
| Registration plate lamp issues | 15 |
| Registration plate issues | 15 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 13 |
| Front wheel bearings have excessive free play |2.3.5b| | 11 |
| Throttle operating incorrectly |6.2.1f| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 9 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 8 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Rear Drive chain worn to excess |6.2.1e| | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Stop lamp remains on when the brakes are released | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 3 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 2 |