| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 117 |
| Horn not working |1.7.3a| | 38 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 34 |
| Drive chain excessively loose |6.2.1d| | 33 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 32 |
| Registration plate issues | 27 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 26 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 25 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 25 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 23 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 20 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 20 |
| Drive chain worn to excess |6.2.1e| | 18 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 17 |
| Front wheel bearings have excessive free play |2.3.5b| | 14 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 14 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 13 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 13 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 13 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 12 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 12 |
| Stop lamp remains on when the brake is released |1.3.1e| | 12 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 12 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 12 |
| Steering headbearing has excessive free play |2.2.2| | 10 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 10 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Drive chain excessively tight |6.2.1d| | 8 |
| Front Horn not working |1.7.3a| | 8 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Throttle operating incorrectly |6.2.1f| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Rear Drive chain excessively loose |6.2.1d| | 6 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Headlamp insecure |1.2.3b| | 5 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 5 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 5 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 5 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Handlebar deformed |2.1.1b| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 4 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 4 |
| Nearside Rear Footrest insecure |6.2.1a| | 4 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 4 |
| Offside Rear Footrest insecure |6.2.1a| | 4 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 4 |
| Front Brake hose which buldges |3.2.B4| | 4 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Drive chain worn to excess |6.2.1e| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 3 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 3 |
| Front Position lamp not working |4.2.1 |a|| | 3 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Brake hose excessively deteriorated | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Nearside Front Direction indicator insecure |1.5.3b| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Brake hose damaged | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |