| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 52 |
| Rear reflector on motorcycle missing |1.4.1| | 42 |
| Drive chain excessively loose |6.2.1d| | 27 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 22 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 19 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 18 |
| Steering headbearing has excessive free play |2.2.2| | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Drive chain worn to excess |6.2.1e| | 15 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Horn not working |1.7.3a| | 12 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 10 |
| Registration plate issues | 10 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 9 |
| Drive chain excessively tight |6.2.1d| | 9 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Rear reflector on motorcycle obscured |1.4.1| | 7 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 7 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 7 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 7 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Nearside Steering lock stop ineffective |2.1.3| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Nearside Rear Footrest missing |6.2.1a| | 5 |
| Offside Steering lock stop ineffective |2.1.3| | 5 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 5 |
| Headlamp insecure |1.2.3b| | 5 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 5 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 4 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Fuel system component leaking |7.2.1a| | 4 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 4 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 4 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Front suspension has inadequate damping effect. |2.3.6c| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Rear Footrest missing |6.2.1a| | 3 |
| Offside Rear Direction indicator insecure |1.5.3b| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front mudguard insecure |2.3.7| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Brake lever insecure |3.1.2a| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Offside Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Brake pedal mounting insecure |3.1.2a| | 2 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 2 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear Brake pedal insecure |3.1.2a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 2 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| An item not tested |Manual| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Registration plate lamp issues | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Footrest missing |6.2.1a| | 2 |
| Front Steering lock stop ineffective |2.1.3| | 2 |
| Nearside Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Stop lamp not working rear control (4.3.1 (a) (ii)) | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Rear Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake lever pivots excessively worn |3.1.3a| | 1 |
| 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 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Centre Front Headlamp insecure |1.2.3b| | 1 |
| Outer Rear Direction indicator insecure |1.5.3b| | 1 |
| Inner Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Inner Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Centre Fuel tank leaking |7.2.1a| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Lower Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear wheel bearings are excessively tight |2.4.A.2c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Brake lever excessively damaged |3.2.A1c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Offside Steering lock stop maladjusted |2.1.3| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Horn not working |1.7.3a| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Centre Front Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Offside Motorcycle structure cracked |6.1.1a| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Brake cable badly frayed |3.2.A1b| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Inner Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Headlamp insecure |1.2.3b| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear suspension component cracked rear shock snapped in half |2.4.A.1a| | 1 |
| Steering lock stop ineffective both sides |2.1.3| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Handlebar deformed both bent |2.1.1b| | 1 |
| Front Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Front shock absorber seal failed and leaking oil both |2.3.3| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Front Steering lock stop ineffective lefthand and righthand |2.1.3| | 1 |
| Front Direction indicators flashing more than 120 times per minute front and rear |1.5.1c| | 1 |
| Rear Rear suspension bush has excessive free play swingarm |2.4.A2a|i|| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride split pin missing rear wheel nut |6.2.1h| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear 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 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Brake hose damaged | 1 |
| Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies switch on hand control sticking now repaired for test suggest renew asap |1.3.1a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Footrest missing |6.2.1a| | 1 |
| Rear Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |