| Most common failures | No# failures |
|---|
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Headlamp aim out of alignment | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Registration plate issues | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Horn not working |1.7.3a| | 3 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Fuel system component leaking |7.2.1a| | 2 |
| Rear Motorcycle structure cracked |6.1.1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 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| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Front Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Brake cylinder severely damaged |3.2.B1b| | 1 |
| Offside Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Stop lamp does not illuminate immediately a brake applies Stop lamp does not work when rear brake applied |1.3.1a| | 1 |
| Rear Brake lever mounting insecure |3.1.2a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Lower Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |