| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 40 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 23 |
| Rear reflector on motorcycle missing |1.4.1| | 22 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Drive chain excessively loose |6.2.1d| | 13 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 10 |
| Steering headbearing has excessive free play |2.2.2| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 10 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 8 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 7 |
| Registration plate issues | 7 |
| Horn not working |1.7.3a| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Riders seat insecure |6.2.1a| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Offside Front Direction indicators not working |1.5.1c| | 5 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 4 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear reflector on motorcycle obscured |1.4.1| | 4 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 4 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 4 |
| Brake lever insecure |3.1.2a| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Brake pedal is so short and the brake cannot be readily applied |3.1.3c| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Nearside Steering lock stop ineffective |2.1.3| | 3 |
| Offside Steering lock stop ineffective |2.1.3| | 3 |
| Indicator tell tale not functioning |1.5.2| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Rear suspension component seized |2.4A2a|ii|| | 2 |
| Rear mono-shock insecure |2.4.B.4| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Steering lock stop maladjusted |2.1.3| | 2 |
| Front Brake lever insecure |3.1.2a| | 2 |
| An item not tested |Manual| | 2 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Position lamp switch insecure |1.1.4b| | 2 |
| Rear Seat insecure |6.2.1a| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Centre Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Centre Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain fouling another component |6.2.1d| | 1 |
| Rear Lower Rear mono-shock insecure |2.4.B.4| | 1 |
| Rear Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front An item not tested |Manual| | 1 |
| Rear An item not tested |Manual| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering To RHS |2.5.1| | 1 |
| Stop lamp does not illuminate immediately a brake applies needs a lot of force to work |1.3.1a| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Front Horn not working |1.7.3a| | 1 |
| Rear suspension bush has excessive free play swingam side to side |2.4.A2a|i|| | 1 |
| Nearside Front Headlamp switch faulty |1.2.4| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Nearside Rear Chain guard insecure |6.2.1c| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Drive belt excessively tight |6.2.1d| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Brake component insecure |1.1.21 |c|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Footrest missing Both sides. (6.2.12 (a)) | 1 |
| Wheel fixing missing (multiple fixings) Secure nuts not fitted to rear wheel spindle. (5.2.1 (a) (i)) | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear suspension component cracked |2.4.A.1a| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front shock absorber seal failed and leaking oil both sides |2.3.3| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Rear Brake lever is inoperative |3.1.3c| | 1 |
| Rear Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Horn missing |1.7.1| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Nearside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Brake lever mounting insecure |3.1.2a| | 1 |
| Rear Brake lever excessively damaged |3.2.A1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Centre Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Direction indicator not working all |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Rear suspension component cracked |2.4.A.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Nearside Front Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Offside Rear Stop lamp missing |1.3.3a| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |