| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Horn not working |1.7.3a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Registration plate issues | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Stop lamp affected by the operation of the horn |1.3.2| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Headlamp main beam affected by the operation of the horn |1.2.2c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Direction indicator not working all indicators |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 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 |
| Front Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Front Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Nearside Steering linkage locking device ineffective |2.1.3 |d|| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Wheel spoke excessively bent |4.2.1b| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Rear Upper Rear shock absorber insecurely mounted top blot loose |2.4.A.3b| | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |