| Most common failures | No# failures |
|---|
| Registration plate issues | 75 |
| Rear reflector on motorcycle missing |1.4.1| | 46 |
| Headlamp aim out of alignment | 44 |
| Registration plate lamp issues | 34 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 11 |
| Rear reflector missing (4.8.2 (a) (ii)) | 11 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 10 |
| Rear reflector missing |4.8.2 |a| |ii|| | 7 |
| Horn not working |1.7.3a| | 7 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Rear Footrest missing |6.2.1a| | 6 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 4 |
| Rear Footrest missing (6.2.12 (a)) | 4 |
| Offside Rear Footrest missing (6.2.12 (a)) | 4 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| 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| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |