| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Direction indicator missing |1.5.1a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Centre Front Upper Fuel hose leaking |7.2.1a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Central Rear Inner Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front Outer Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Registration plate issues | 1 |
| Central Front Inner Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front Horn replaced by a gong |1.7.3b| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Centre Rear Upper Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Front Upper Horn not working |1.7.3a| | 1 |
| Centre Rear Upper Rear reflector on motorcycle missing |1.4.1| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside 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 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |