| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Registration plate issues | 10 |
| Headlamp aim out of alignment | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Wheel spoke excessively loose |4.2.1b| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Registration plate lamp issues | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Horn missing |1.7.1| | 2 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Rear wheel bearings are excessively tight |2.4.A.2c| | 1 |
| Brake pipe excessively corroded | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 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 |
| Offside Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Centre Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Inner Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Wheel spoke cracked (5.2.2 (d)) | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Sidecar rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Brake lever insecure |3.1.2a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Offside Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Brake disc|s| friction surface contaminated by oil or grease WD 40 applied for winter and cleaned off |3.2.A1k| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Lower Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Horn emits 2 or more alternating tones |1.7.3b| | 1 |
| Brake performance not tested |3.3| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear suspension bearing has excessive free play swinging arm |2.4.A2a|i|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside 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 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |