| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 61 |
| Headlamp aim out of alignment | 39 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 12 |
| Nearside Front Brake disc fractured (1.1.14 (a) (ii)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Offside Front Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Registration plate issues | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front position lamp does not illuminate immediately when switched on dipped beam |1.1.3a| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Offside Front Upper Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride spindle locking pin |6.2.1h| | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Headlamp incorrect colour |4.1.4 |a|| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Footrest insecure Return Spring incorrectly fitted (6.2.12 (a)) | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Footrest insecure (6.2.12 (a)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Handlebar grip insecure to handlebar left hand heated (2.2.1 (d) (ii)) | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Throttle operating incorrectly Sticking |6.2.7 |a| |i|| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Stop lamp not working brake (4.3.1 (a) (ii)) | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls Front brake switch does not operate rear brake light (4.3.2 (a) (iii)) | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |