| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 19 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Registration plate issues | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| An item not tested |Manual| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Rear position lamp insecure |1.1.1c| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Footrest insecure |6.2.1a| | 1 |
| Front Horn is not a constant note |1.7.3c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Drive chain excessively tight |6.2.1d| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Offside Rear Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Offside Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 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 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Wheel fractured significantly reducing the original strength |4.2.1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Outer Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Direction indicator insecure |1.5.3b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake linkage excessively damaged |3.2.A1c| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Upper Riders seat insecure |6.2.1a| | 1 |
| Nearside Front Lower Footrest insecure |6.2.1a| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Offside 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 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Front Fairings insecure and likely to impede the steering mud gauard |2.1.2e| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Central Front Upper Direction indicators not working both side indicators not working |1.5.1c| | 1 |
| Central Rear Upper Rear position lamp damaged and function impaired tail light not working |1.1.1b| | 1 |
| Central Rear Lower Rear shock absorber has inadequate damping effect. rear shock is not a mono shock unit and cannot cope with vehicle weight ,is on its stop when stood |2.4.A.3b| | 1 |
| Central Rear Lower Rear wheel bearings have excessive free play rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Central Rear Lower Wheel alignment incorrect which adversely affects the handling rear wheel alignment |2.5.1| | 1 |
| Central Rear Lower Rear shock absorber has inadequate damping effect. rear shock |2.4.A.3b| | 1 |
| Central Rear Upper Rear reflector on motorcycle missing reflector missing |1.4.1| | 1 |
| Central Rear Lower Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort rear brake not working correctly |3.3.A1c| | 1 |
| Nearside Front Lower Roller brake test indicates a binding brake front brake binding |3.3.A1a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Fuel pipe leaking (6.1.3 (b) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |