| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Nearside Rear Footrest missing |6.2.1a| | 15 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Offside Rear Footrest missing |6.2.1a| | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Registration plate issues | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 4 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 4 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Front Direction indicators not working |1.5.1c| | 4 |
| Nearside Rear Direction indicators not working |1.5.1c| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Indicator switch insecure |1.5.4| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Offside Rear Footrest insecure |6.2.1a| | 3 |
| Rear Footrest missing |6.2.1a| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Headlamp switch insecure |1.2.4| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 2 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 2 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Indicator switch defective |1.5.4| | 2 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 2 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Direction indicator incorrect colour |1.5.1b| | 2 |
| Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Brake caliper|s| insecure |3.2.A1j| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Offside Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Nearside Front Direction indicator missing |1.5.1a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front Brake master cylinder severely damaged |3.2.B1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Drive chain sprocket worn to excess both |6.2.1e| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Rear Lower Drive chain worn to excess |6.2.1e| | 1 |
| Centre Rear Lower Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Centre Rear Lower Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Centre Front Lower Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Centre Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Brake reaction bracket insecure lock tabs not folded over |3.2.A1j| | 1 |
| Lower Rear position lamp incorrect colour |1.1.2b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Upper Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Lower Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Offside Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Footrest missing (6.2.12 (a)) | 1 |
| Registration plate lamp issues | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded lever catches throttle cable |3.2.A1h| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Headlamp switch insecure |1.2.4| | 1 |
| Offside Rear Footrest insecure circlip missing |6.2.1a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded lever catches throttle cable |3.2.A1h| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Headlamp aim headlamp damaged and function impaired bulb not positioned correctly |inside of headlamp burnt| |1.2.3a| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain adjuster loose |6.2.1h| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Brake fluid reservoir severely damaged |3.2.B1b| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Upper Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Lower Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Centre Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Chain guard insecure bolt missing |6.2.1c| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded caliper fouling disc |3.2.A1h| | 1 |
| Rear Brake cylinder insecurely mounted caliper |3.2.B1a| | 1 |
| Central Rear suspension bearing has excessive free play swing arm pivot |2.4.A2a|i|| | 1 |
| Drive chain sprocket carrier worn to excess bearing play |6.2.1e| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear suspension bearing has excessive free play swinging arm |2.4.A2a|i|| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection front brake hose |2.1.2c| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. throttle assy |2.1.1c| | 1 |
| Throttle operating incorrectly throttle assy insecure |6.2.1f| | 1 |
| Footrest missing pillion |6.2.1a| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Brake hose damaged | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Front Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Steering lock stop maladjusted |2.1.3| | 1 |
| Brake hose excessively deteriorated | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Position lamp not working low beam (4.2.1 (a)) | 1 |
| Drive chain sprocket so loose it is likely to fail sprocket bolt missing (6.1.7 (c) (ii)) | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies rear stop light switch |1.3.1a| | 1 |
| Nearside Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Front Position lamp switch insecure |1.1.4b| | 1 |
| Rear Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Offside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Front position lamp does not illuminate immediately when switched on parking light |1.1.3a| | 1 |
| Rear Rear suspension bush has excessive free play swing arm |2.4.A2a|i|| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Front position lamp insecure |1.1.1c| | 1 |
| Rear Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Brake performance not tested |3.3| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Braking system does not have an approriate system/s fitted according to its age |3.1.1| | 1 |