| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 22 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Horn not working |1.7.3a| | 8 |
| Headlamp aim out of alignment | 8 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Headlamp insecure |1.2.3b| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Registration plate issues | 2 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Brake performance not tested |3.3| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| An item not tested |Manual| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering To LHS |2.5.1| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Headlamp switch faulty lamp is dipped when switch set to hi-beam, lamp on hi-beam when switch set to dipped |1.2.4| | 1 |
| Front Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front shock absorber seal failed and leaking oil both |2.3.3| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Direction indicator missing Both |1.5.1a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake lever cannot be applied smoothly fouling another component |3.1.3d| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Direction indicator affected by the operation of another lamp all |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies front lever |1.3.1a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear An item not tested |Manual| | 1 |
| Front Wheel fixing loose (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Fuel hose leaking (6.1.3 (b) (i)) | 1 |
| Headlamp light intensity severely reduced bulb is black inside. poor lighting (4.1.4 (a)) | 1 |
| Stop lamp switch with a delay in operation switch rear not working (4.3.2 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |