| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 107 |
| Registration plate issues | 54 |
| Headlamp aim out of alignment | 47 |
| Registration plate lamp issues | 32 |
| Rear reflector missing (4.8.2 (a) (ii)) | 22 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 11 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 8 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 7 |
| Rear reflector missing |4.8.2 |a| |ii|| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Drive chain excessively loose |6.2.1d| | 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| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| An item not tested |Manual| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Horn not working |1.7.3a| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Nearside Front Direction indicator insecure |1.5.3b| | 3 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |