| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 105 |
| Registration plate issues | 83 |
| Headlamp aim out of alignment | 76 |
| Rear reflector missing (4.8.2 (a) (ii)) | 19 |
| Horn not working |1.7.3a| | 18 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Rear reflector missing |4.8.2 |a| |ii|| | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 11 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 10 |
| Rear Wheel spoke excessively loose |4.2.1b| | 9 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Stop lamp remains on when the brakes are released | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Drive chain worn to excess |6.2.1e| | 7 |
| 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| | 6 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 6 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 6 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Registration plate lamp issues | 6 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Indicator switch insecure |1.5.4| | 5 |
| Rear Brake excessively binding (1.2.1 (f)) | 5 |
| Offside Rear Footrest missing |6.2.1a| | 5 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Rear Brake excessively binding |1.2.1 |f|| | 3 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Roller brake test indicates a binding brake (3.3.A1a) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 2 |
| Horn control not functioning. |1.7.2b| | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Direction indicator 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 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |