| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Horn not working |1.7.3a| | 4 |
| Registration plate issues | 4 |
| Horn not working (1.7.3a) | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Headlamp aim out of alignment | 2 |
| Rear wheel bearings have excessive free play (2.4.A.2c) | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 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 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Front Brake lagging in operation (1.2.1 (d)) | 1 |
| Stop lamp not working (4.3.1 (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 Stop lamp does not illuminate immediately a brake applies brake (1.3.1a) | 1 |
| Horn control defective (1.7.2a) | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Drive chain excessively loose (6.2.1d) | 1 |
| Headlamp insecure (1.2.3b) | 1 |
| Headlamp aim beam image kick up to the offside (1.6) | 1 |
| Stop lamp remains on when the brake is released (1.3.1e) | 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 |
| Drive chain worn to excess (6.2.1e) | 1 |
| Steering headbearing has excessive free play (2.2.2) | 1 |
| Front Wheel spoke excessively loose (4.2.1b) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |