| Most common failures | No# failures |
|---|
| Registration plate issues | 8 |
| Horn not working |1.7.3a| | 5 |
| Headlamp aim out of alignment | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Horn control not readily accesible. |1.7.2a| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp missing |1.2.3a| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Brake hose damaged | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 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 |
| Direction indicator missing |1.5.1a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Offside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake pipe excessively damaged |3.2.B2a| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Position lamp missing |4.2.1 |a|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Brake has no recorded effort at a wheel front brake (1.2.1 (a) (ii)) | 1 |
| Brake effort inadequate at a wheel front brake (1.2.1 (a) (i)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |