| Most common failures | No# failures |
|---|
| Registration plate issues | 22 |
| Rear reflector on motorcycle missing |1.4.1| | 15 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Horn not working |1.7.3a| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Headlamp aim out of alignment | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Horn missing |1.7.1| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Registration plate lamp issues | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Throttle operating incorrectly Not closing on lock |6.2.1f| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake caliper inadequately mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Rear Lower Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front Drive chain worn to excess |6.2.1e| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Wheel spoke excessively loose Rear |4.2.1b| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp missing (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Upper Stop lamp missing |1.3.3a| | 1 |
| Upper Rear reflector on motorcycle missing |1.4.1| | 1 |
| Upper Horn not working |1.7.3a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear Stop lamp not working rear brake light switch not working |4.3.1 |a| |ii|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Headlamp missing |1.2.3a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Central Wheel bearing play so excessive it is likely to break up front and rear wheel bearings (5.1.3 (a) (ii)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Front Wheel spoke excessively loose Spokes |4.2.1b| | 1 |
| Front Front shock absorber seal failed and leaking oil offside and nearside |2.3.3| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Brake component worn and seriously reduced in strength worn below limit |3.2.A1| | 1 |
| Front Horn missing |1.7.1| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Stop lamp not working when rear brake applied |4.3.1 |a| |ii|| | 1 |