| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 46 |
| Rear reflector on motorcycle missing |1.4.1| | 32 |
| Drive chain excessively loose |6.2.1d| | 17 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 14 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 11 |
| Steering headbearing has excessive free play |2.2.2| | 11 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 10 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Registration plate issues | 9 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 9 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 8 |
| Horn not working |1.7.3a| | 8 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Headlamp insecure |1.2.3b| | 6 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 4 |
| Offside Rear Footrest insecure |6.2.1a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear reflector on motorcycle obscured |1.4.1| | 4 |
| Nearside Steering lock stop ineffective |2.1.3| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Drive chain excessively tight |6.2.1d| | 3 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Nearside Rear Footrest insecure |6.2.1a| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Offside Headlamp insecure |1.2.3b| | 2 |
| Brake pedal pivots excessively worn |3.1.3a| | 2 |
| Nearside Upper Front suspension assembly component missing |2.3.1| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 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 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Brake pedal insecure |3.1.2a| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front suspension assembly component loose |2.3.1| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Steering lock stop ineffective |2.1.3| | 2 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Offside Front Steering lock stop ineffective |2.1.3| | 2 |
| Front Front wheel spindle securing nut locking device missing |2.3.5a| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Brake locking device missing |3.2.A1e| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Brake performance not tested |3.3| | 2 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 2 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Offside Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Centre Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Rear Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Handlebar cracked |2.1.1b| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Nearside Upper Front suspension assembly component loose |2.3.1| | 1 |
| Offside Upper Front suspension assembly component loose |2.3.1| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Steering headbearing has excessive free play ruffness |2.2.2| | 1 |
| Front Front mudguard can easily contact the wheel |2.3.7| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Centre Front Fuel pipe leaking |7.2.1a| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake pedal attachment screws loose |3.1.2b| | 1 |
| Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Registration plate lamp issues | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Nearside Direction indicator insecure |1.5.3b| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Front suspension assembly has an insecure fork brace |2.3.4d| | 1 |
| Nearside Front Handlebar fouling on the fuel tank or bodywork on full lock fouling the tank |2.1.4 |b|| | 1 |
| Central Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Central Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear Stop lamp insecure |1.3.3b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Motorcycle structure adversely modified |6.1.1b| | 1 |
| Motorcycle structure cracked |6.1.1a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear Brake component is excessively corroded |3.1.5| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies brake control |1.3.1a| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Centre Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Fuel system component leaking CARB |7.2.1a| | 1 |
| Front shock absorber seal failed and leaking oil OFFSIDE |2.3.3| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars OFFSIDE |2.1.2b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars NEARSIDE |2.1.2b| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Spocket |6.2.1h| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Offside Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Lower Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Offside Rear Brake lining|s| contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Upper Front suspension assembly component missing |2.3.1| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Direction indicator not working both... switch not working |1.5.1c| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Offside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Offside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering headbearing has excessive free play Steering head bearings excessively pitted/notchy |2.2.2| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| An item not tested |Manual| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Drive chain fouling another component |6.2.1d| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |