| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Rear 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| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Footrest missing |6.2.1a| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Registration plate issues | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 2 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Brake hose excessively deteriorated | 1 |
| Front Lower Motorcycle structure cracked |6.1.1a| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.B.7| | 1 |
| Offside Rear Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.C.1a| | 1 |
| Handlebar insecure to the extent that steering is adversely affected nearside handle bar mounting insecure and both top mounts insecure (2.2.1 (d) (ii)) | 1 |
| Stop lamp(s) not working on control 2 brake (4.3.1 (a) (ii)) | 1 |
| Rear Brake pipe excessively damaged across axle (1.1.11 (c)) | 1 |
| Nearside Brake fluid significantly below minimum mark on control one (1.1.10 (d) (ii)) | 1 |
| Suspension arm attachment bracket/mounting insecure rear mounting for chain spring missing (5.3.3 (a) (i)) | 1 |
| Front Brake pipe excessively damaged |3.2.B2a| | 1 |
| Nearside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear An item not tested |Manual| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake cable badly frayed |3.2.A1b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| An item not tested |Manual| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake master cylinder has a seized master cylinder pivot. |3.2.B5| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |