| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 14 |
| Headlamp aim out of alignment | 12 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 11 |
| Steering headbearing has excessive free play |2.2.2| | 10 |
| Horn not working |1.7.3a| | 7 |
| Registration plate issues | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 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 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Fuel cap sealing washer missing |7.2.2c| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear wheel rotation likely to be impeded Rear light/mudguard insecure |6.2.1b| | 1 |
| Direction indicator insecure Indicator lense |1.5.3b| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Brake lever mounting insecure |3.1.2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Upper Headlamp insecure |1.2.3b| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Centre Front Upper Horn not working |1.7.3a| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Fuel cap missing |7.2.2a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Headlamp switch insecure |1.2.4| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Brake lever cracked |3.1.2c| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Exhaust has part of the system missing |7.1.1a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |