| Most common failures | No# failures |
|---|
| Registration plate issues | 177 |
| Headlamp aim out of alignment | 168 |
| Rear reflector missing (4.8.2 (a) (ii)) | 110 |
| Stop lamp remains on when the brakes are released | 69 |
| Registration plate lamp issues | 59 |
| Rear reflector missing |4.8.2 |a| |ii|| | 33 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 28 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 21 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 20 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 11 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 9 |
| Stop lamp not working (4.3.1 (a) (ii)) | 8 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 8 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 7 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 6 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 4 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 4 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 4 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 3 |
| Headlamp insecure (4.1.1 (c)) | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 3 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 3 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 3 |