| Most common failures | No# failures |
|---|
| Registration plate issues | 51 |
| Rear reflector on motorcycle missing |1.4.1| | 37 |
| Horn not working |1.7.3a| | 16 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 13 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Headlamp aim out of alignment | 8 |
| Horn missing |1.7.1| | 6 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Registration plate lamp issues | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 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 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Suspension arm pin or bush excessively worn swingarm (5.3.4 (a) (i)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies front |1.3.1a| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Nearside Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Stop lamp not working brake control (4.3.1 (a) (ii)) | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 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 Wheel excessively damaged |5.2.2 |c| |i|| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Stop lamp not working On front lever |4.3.1 |a| |ii|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Headlamp at least one does not illuminate on main beam (1.2.2a(ii)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear suspension bush has excessive free play shock absorber bottom |2.4.A2a|i|| | 1 |
| Rear Direction indicators not working both |1.5.1c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 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 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Front Shock absorber has a serious fluid leak Fork Seal Leaking (5.3.2 (b)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Riders seat insecure Attachment bolt missing (6.2.5 (a) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Rear reflector missing replace (4.8.2 (a) (ii)) | 1 |
| Exhaust system insecure Rear mtg not fitted (6.1.2 (a)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |