| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front 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 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 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 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Front Exhaust mounting missing |7.1.1c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Nearside Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Registration plate issues | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Centre Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Centre Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Upper Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Direction indicator likely to become detached both (4.4.1 (c) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake performance not tested |3.3| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |