| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Registration plate issues | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Roller brake test indicates a binding brake (3.3.A1a) | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition needs repacking (8.1.1 (a)) | 1 |
| Horn sound not in accordance with requirements not loud enough (7.7 (c)) | 1 |
| All direction indicators adversely affected by the operation of another lamp battery dead (4.4.3 (b)) | 1 |
| Stop lamp adversely affected by the operation of another lamp battery dead (4.3.3 (b)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Brake grabbing severely lever pivot/piston needs lube (1.2.1 (c)) | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Horn sound not in accordance with requirements not loud enough -being rubbed by cables (7.7 (c)) | 1 |
| Rear Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Front Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Lower Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Lower Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Wheel fractured significantly reducing the original strength |4.2.1a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Front Brake lever is so short and the brake cannot be readily applied (3.1.3c) | 1 |
| Front Horn not loud enough to be heard by another road user (1.7.3a) | 1 |
| Rear Brake pedal cannot be released smoothly (3.1.3d) | 1 |
| Rear Drive chain worn to excess (6.2.1e) | 1 |
| Front Exhaust is leaking and excessively noisey (7.1.1b) | 1 |
| Rear Brake cylinder severely corroded |3.2.B1b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Horn control not functioning. |1.7.2b| | 1 |
| Front Indicator tell tale not operating correctly |1.5.2| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |