| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 31 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 19 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 15 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 13 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 12 |
| Drive chain excessively loose |6.2.1d| | 12 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 11 |
| Horn not working |1.7.3a| | 11 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 7 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Registration plate issues | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 6 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Rear suspension component seized |2.4A2a|ii|| | 4 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Offside Front Direction indicator insecure |1.5.3b| | 4 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Brake locking device missing |3.2.A1e| | 3 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 3 |
| Rear mono-shock pivot seized |2.4.B.4| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 3 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 2 |
| Rear Brake locking device insecure |3.2.A1e| | 2 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Offside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Offside Handlebar handgrip missing |2.1.1c| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Centre Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Upper Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Brake hose damaged | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear suspension bush excessively deteriorated All Lower link arm bushes |2.4.A2a|i|| | 1 |
| Rear suspension movement is excessively stiff rear suspension seized solid. |2.4.A.3b| | 1 |
| Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort rear brake needs adjusting. |3.3.A1c| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Centre Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Offside Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Front Roller brake test indicates a sticking brake severely sticking and grabbing brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort severe fluctuation on rear brake |3.3.A1d| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Brake drum|s| insecure |3.2.A1g| | 1 |
| Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake component is severely distorted |3.1.5| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Centre Rear Lower Rear suspension component seized |2.4A2a|ii|| | 1 |
| Nearside Front Lower Footrest insecure |6.2.1a| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear opperated |1.3.1a| | 1 |
| Brake locking device missing rear reaction bracket |3.2.A1e| | 1 |
| Nearside Rear Lower Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Brake locking device insecure Rear brake torque-arm securing-nut loose. |3.2.A1e| | 1 |
| Offside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Centre Rear Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| An item not tested |Manual| | 1 |
| Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Lower Suspension arm pin or bush excessively worn all bushes |5.3.4 |a| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Drive chain excessively tight Tightspot in chain |6.2.1d| | 1 |
| Centre Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Central Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Throttle operating incorrectly not returning |6.2.7 |a| |i|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.1f) | 1 |
| Registration plate lamp issues | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |