| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 264 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 93 |
| Registration plate issues | 87 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 85 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 64 |
| Riders seat insecure |6.2.1a| | 55 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 50 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 49 |
| Rear reflector on motorcycle missing |1.4.1| | 45 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 44 |
| Horn not working |1.7.3a| | 42 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 40 |
| Front wheel bearings have excessive free play |2.3.5b| | 37 |
| Steering headbearing has excessive free play |2.2.2| | 36 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 30 |
| Exhaust excessively deteriorated |7.1.1a| | 29 |
| Front wheel bearings are excessively rough |2.3.5b| | 27 |
| Fuel cap sealing washer missing |7.2.2c| | 24 |
| Headlamp insecure |1.2.3b| | 23 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 19 |
| Offside Rear Direction indicator not working |1.5.1c| | 18 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 15 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 14 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 13 |
| Direction indicators not working |1.5.1c| | 12 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 12 |
| Offside Rear Direction indicators not working |1.5.1c| | 12 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 11 |
| Brake hose damaged | 11 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 11 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 11 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 10 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 10 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 9 |
| Brake lever has inadequate reserve travel |3.1.3b| | 9 |
| Front Steering headbearing has excessive free play |2.2.2| | 9 |
| Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 8 |
| Nearside Rear Direction indicator not working |1.5.1c| | 8 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 8 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 8 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 8 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 8 |
| Registration plate lamp issues | 8 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 7 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 7 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 7 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 7 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 6 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 6 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 6 |
| Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Handlebar mounting clamp loose |2.1.1a| | 5 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 5 |
| An item not tested |Manual| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Offside Front Direction indicator not working |1.5.1c| | 5 |
| Headlamp aim not tested |1.6| | 5 |
| Horn not working |7.7 |a| |ii|| | 4 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Front position lamp insecure |1.1.1c| | 4 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front wheel spindle loose |2.3.5a| | 4 |
| 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| | 4 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Fuel cap missing |7.2.2a| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 4 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 4 |
| Rear Direction indicator obscured |1.5.1a| | 4 |
| Headlamp damaged and function impaired |1.2.3a| | 4 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 4 |