| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 23 |
| Registration plate issues | 20 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Horn not working |1.7.3a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Vehicle identification number not permanently displayed |6.3.5a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Horn missing |1.7.1| | 2 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| 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| | 2 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake disc|s| insecure |3.2.A1g| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Drive chain excessively loose |6.2.1d| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Front suspension assembly component missing |2.3.1| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Centre Rear Lower Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |