| Most common failures | No# failures |
|---|
| Horn not working |1.7.3a| | 6 |
| Headlamp aim out of alignment | 5 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Stop lamp affected by the operation of the horn |1.3.2| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Registration plate issues | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp with brake light |1.5.1c| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front Brake cable has a significantly damaged outer casing. |3.2.A1b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Fuel system component leaking carb area (6.1.3 (b) (i)) | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |