| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Headlamp aim out of alignment | 5 |
| Registration plate issues | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Throttle operating incorrectly throttle control insecure |6.2.1f| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Central Front Brake lining(s) contaminated both brakes (1.1.13 (b)) | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Headlamp light source and lamp not compatible dip beam no pattern (4.1.4 (c)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Central Rear Rear reflector on motorcycle missing |1.4.1| | 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 Brake excessively binding |1.2.1 |f|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |