| Most common failures | No# failures |
|---|
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Registration plate issues | 5 |
| Horn not working |1.7.3a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 4 |
| Direction indicators not working |1.5.1c| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp aim out of alignment | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Front Wheel spoke excessively corroded |4.2.1b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Rear Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Fuel system component leaking carb leaking fuel |7.2.1a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Motorcycle structure cracked |6.1.1a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Nearside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Horn control not functioning. |1.7.2b| | 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 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Fuel system component leaking Carburettor |7.2.1a| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Wheel spindle loose |5.2.1 |c| |i|| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |