| Most common failures | No# failures |
|---|
| Drive chain excessively loose |6.2.1d| | 5 |
| Headlamp aim out of alignment | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Registration plate issues | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Brake locking device missing |3.2.A1e| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 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 reflector on motorcycle deteriorated and function impaired |1.4.2a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Horn not working |1.7.3a| | 2 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Offside Front Shock absorber has a serious fluid leak fork stanchion |5.3.2 |b|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock left hand lock |2.1.4 |b|| | 1 |
| Rear Brake clevis joint insecure |1.1.15 |c|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Fuel cap missing |7.2.2a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick 1 brake lining missing |3.2.A1f|i|| | 1 |
| Central Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Rear Brake locking device missing brake torque arm |3.2.A1e| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake lever |1.3.1a| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |