| Most common failures | No# failures |
|---|
| Horn not loud enough to be heard by another road user |1.7.3a| | 10 |
| Headlamp aim out of alignment | 8 |
| Registration plate issues | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Horn not working |1.7.3a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear Brake lever attachment screws loose |3.1.2b| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear suspension component seized |2.4A2a|ii|| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Nearside Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Brake cable has a significantly damaged outer casing. |3.2.A1b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Centre Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Front Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Wheel damaged or distorted to the extent that control of the motorcycle is likely to be adversely affected |5.2.2 |c| |ii|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front mudguard can easily contact the wheel |2.3.7| | 1 |
| Front mudguard can easily contact any fixed point of the motor bicycle. |2.3.7| | 1 |
| Nearside Rear Direction indicator obscured |1.5.1a| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Lower Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |