| Most common failures | No# failures |
|---|
| Registration plate issues | 30 |
| Rear reflector missing (4.8.2 (a) (ii)) | 27 |
| Headlamp aim out of alignment | 10 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 9 |
| Registration plate lamp issues | 9 |
| Rear reflector missing |4.8.2 |a| |ii|| | 8 |
| Stop lamp remains on when the brakes are released | 8 |
| Horn not working |7.7 |a| |ii|| | 8 |
| Horn not working (7.7 (a) (ii)) | 7 |
| Horn not working (7.7 (a)) | 6 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp aim not tested |4.1.2 |b|| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Forks in such a condition that steering control is adversely affected insecure horn impedes steering control (2.2.2 (d) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Offside Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Rear reflector reflecting white to the rear |4.8.2 |a| |ii|| | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock in contact with horn (2.1.4 (a)) | 1 |
| Stop lamp remains on when the brake is released Front / Rear |1.3.1e| | 1 |
| Horn not working |1.7.3a| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Central Front Shock absorber has a serious fluid leak FRONT OFFSIDE FOR LEAKING. (5.3.2 (b)) | 1 |
| Central Rear Road spring insecure shock absorber preload set that spring does not locate correctly (5.3.1 (a) (i)) | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain sprocket so worn it is likely to fail both front and rear (6.1.7 (c) (ii)) | 1 |
| Horn not working missing (7.7 (a) (ii)) | 1 |
| Rear reflector missing rear (4.8.2 (a) (ii)) | 1 |
| Wheel spoke excessively loose several spokes loose rear wheel (5.2.2 (d)) | 1 |
| Wheel bearing has excessive play rear wheel (5.1.3 (a) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Front Shock absorber has negligible damping effect Stiff operation (5.3.2 (b)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Wheel excessively distorted front rim more than 2mm run out (5.2.2 (c) (i)) | 1 |
| Suspension arm pin or bush excessively worn lower shock bearing (5.3.4 (a) (i)) | 1 |
| Front Brake linkage has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear Brake component insecure Pad pin damaged |1.1.21 |c|| | 1 |
| Rear reflector defective or damaged by more than 50% of the reflecting surface (4.8.1 (a) (ii)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |