| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 61 |
| Registration plate issues | 51 |
| Rear reflector on motorcycle missing |1.4.1| | 48 |
| Rear reflector missing (4.8.2 (a) (ii)) | 32 |
| Rear reflector missing |4.8.2 |a| |ii|| | 15 |
| Registration plate lamp issues | 14 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 8 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 7 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| 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| | 6 |
| 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)) | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 3 |
| Horn not working (7.7 (a)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| 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|| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Horn not working |1.7.3a| | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear reflector on motorcycle missing (1.4.1) | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Central Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |