| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Headlamp aim out of alignment | 12 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Registration plate issues | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Front suspension has inadequate damping effect. |2.3.6c| | 4 |
| Rear Footrest missing |6.2.1a| | 3 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 3 |
| Front Front mudguard insecure |2.3.7| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 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| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Headlamp aim not tested |1.6| | 1 |
| Horn not working |1.7.3a| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Front Handlebar handgrip missing |2.1.1c| | 1 |
| Nearside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake master cylinder has a seized master cylinder pivot. |3.2.B5| | 1 |
| Rear Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Inner Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Brake component is fractured |3.1.5| | 1 |
| Rear Brake component has an inadequate repair |3.1.5| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Centre Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Fork yoke deformed |2.1.1b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake pedal attachment screws loose |3.1.2b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Offside Drive chain excessively loose |6.2.1d| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |