| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Headlamp aim out of alignment | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Registration plate issues | 3 |
| Central Front Horn not working |7.7 |a| |ii|| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Position lamp switch insecure |1.1.4b| | 1 |
| Front Horn is not continous or uniform |1.7.3c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Central Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel fixing missing (single fixing) (5.2.1 (a) (ii)) | 1 |
| Front Wheel fixing missing (single fixing) (5.2.1 (a) (ii)) | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Rear Brake rod insecure |1.1.15 |c|| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Front suspension assembly component missing |2.3.1| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Central Front Horn control not functioning. horn button needed cleaning at station. |1.7.2b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| All position lamps do not illuminate immediately when switched on not working |1.1.3a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Horn not working |1.7.3a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |