| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Fuel system component insecure |7.2.1b| | 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 Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Registration plate issues | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn not working |1.7.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies not working off front brake lever |1.3.1a| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Footrest missing (6.2.12 (a)) | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Motorcycle structure adversely modified |6.1.1b| | 1 |
| Headlamp incorrect colour |4.1.4 |a|| | 1 |
| Front Wheel fixing missing |single fixing| |5.2.1 |a| |ii|| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |