| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 42 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Registration plate issues | 12 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Registration plate lamp issues | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Horn not working |1.7.3a| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Nearside 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|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear suspension component cracked |2.4.A.1a| | 1 |
| Offside Rear Steering linkage locking device ineffective |2.1.3 |d|| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Position lamp not working side light |4.2.1 |a|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Sidecar wheel bearings are excessively rough |5.2.3d| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Stop lamp not working switch faulty |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front position lamp incorrect colour showing a blue light |1.1.2a| | 1 |
| Stop lamp not working control 1 |4.3.1 |a| |ii|| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| 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| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Stop lamp not working FRONT BRAKE SWITCH NOT WORKING |4.3.1 |a| |ii|| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Throttle operating incorrectly dose not return to closed position when released |6.2.1f| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Rear reflector on sidecar missing |1.4.1| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Stop lamp does not illuminate immediately a brake applies off front lever |1.3.1a| | 1 |
| Brake performance not tested all (1.2.1 (g)) | 1 |
| Nearside Front Brake disc significantly and obviously worn grinding (1.1.14 (a) (i)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear suspension component cracked both shock length adjuster lock nuts cracked. |2.4.A.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear brake binding | 1 |
| Brake excessively binding Front Brake (1.2.1 (f)) | 1 |
| Central Rear Upper Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Central Front Inner Position lamp not working side light not working (prs) (4.2.1 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected Headstock bearings loose (2.2.2 (f) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Central Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |