| Most common failures | No# failures |
|---|
| Registration plate issues | 11 |
| Headlamp aim out of alignment | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Horn not working |1.7.3a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 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 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Offside Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Centre Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |