| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 109 |
| Registration plate issues | 50 |
| Registration plate lamp issues | 34 |
| Rear reflector on motorcycle missing |1.4.1| | 28 |
| Horn not working |1.7.3a| | 27 |
| 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| | 11 |
| Rear reflector missing (4.8.2 (a) (ii)) | 9 |
| Horn not working (7.7 (a)) | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Horn not working (7.7 (a) (ii)) | 8 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Stop lamp remains on when the brakes are released | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 6 |
| Horn not working |7.7 |a| |ii|| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| 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| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear Brake pedal attachment screws loose |3.1.2b| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 2 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Rear Footrest missing |6.2.12 |a|| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Footrest missing (6.2.12 (a)) | 2 |
| Front Brake hose fouling |3.2.B3b| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Stop lamp not working brake light not working when front brake lever operated |4.3.1 |a| |ii|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |