| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 6 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Registration plate issues | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Horn not working |1.7.3a| | 2 |
| Brake hose excessively deteriorated | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain joining link horseshoe clip |6.2.1h| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking engine loose in frame |6.1.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Offside All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Brake caliper|s| insecure no front caliper |3.2.A1j| | 1 |
| Front Brake lever insecure no front lever |3.1.2a| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Vehicle identification number not permanently displayed not stamped on body |6.3.5a| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Brake performance not tested |3.3| | 1 |