| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Registration plate issues | 14 |
| Headlamp aim out of alignment | 12 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Decelerometer brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Rear Brake disc contaminated |1.1.14 |b|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride split link on chain |6.2.1h| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Central Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Central Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Central Front Brake excessively binding |1.2.1 |f|| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam bulb inop replace bulb and test |1.2.2a|i|| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Wheel fixing loose |multiple fixings| |5.2.1 |a| |i|| | 1 |
| Nearside Wheel fixing missing |multiple fixings| bolt missing from axle clamp |5.2.1 |a| |i|| | 1 |
| Offside Wheel fixing loose |multiple fixings| |5.2.1 |a| |i|| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Front Front position lamp does not illuminate immediately when switched on On dip beam |1.1.3a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| 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 |
| Registration plate lamp issues | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on When on dip beam. |1.1.3a| | 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 |
| Front Brake lagging in operation (1.2.1 (d)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Rear sprocket bolt missing |6.2.1h| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Front 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 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Horn missing |1.7.1| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |