| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 13 |
| Headlamp aim out of alignment | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Registration plate issues | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 3 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Rear position lamp damaged and function impaired |1.1.1b| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear position lamp incorrect colour |1.1.2b| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Clutch lever positioned so it cannot be readily operated |6.2.7 |b|| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Centre Rear Lower Rear position lamp missing |1.1.1a| | 1 |
| Centre Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Front Upper Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Rear Upper Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Centre Front Handlebar deformed |2.1.1b| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Rear Direction indicator obviously incorrectly positioned incorrect separation distance (4.4.3 (a)) | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Upper Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Rear Suspension component pin or bush excessively worn Suspension mounting |5.3.4 |a| |i|| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |