| Most common failures | No# failures |
|---|
| Registration plate issues | 57 |
| Headlamp aim out of alignment | 46 |
| Rear reflector on motorcycle missing |1.4.1| | 44 |
| Registration plate lamp issues | 22 |
| Horn not working |1.7.3a| | 21 |
| Rear reflector missing (4.8.2 (a) (ii)) | 18 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| 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|| | 12 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 10 |
| Horn not working (7.7 (a) (ii)) | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Headlamp aim beam image kick up to the offside |1.6| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Horn not working (7.7 (a)) | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Steering lock stop missing |2.1.3| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Headlamp incorrect colour |1.2.1| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Exhaust has a major leak of exhaust gases cracked at headers (6.1.2 (a)) | 2 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 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 |
| Rear Footrest missing |6.2.1a| | 2 |