| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Nearside Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 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 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Exhaust excessively deteriorated |7.1.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Registration plate issues | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Front Wheel corroded to the extent that the wheel could break up (5.2.2 (c) (ii)) | 1 |
| Rear Wheel corroded to the extent that the wheel could break up (5.2.2 (c) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake pedal pivot excessively tight (1.1.1 (a)) | 1 |
| Offside Rear Fuel system component leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced (6.1.1 (c) (i)) | 1 |