| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Registration plate issues | 7 |
| Headlamp aim out of alignment | 7 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Horn not working |1.7.3a| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear reflector missing rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect image kicks to the right should be to the left (4.1.2 (c)) | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Inner Fuel system component leaking |7.2.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |