| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 38 |
| Rear reflector on motorcycle missing |1.4.1| | 36 |
| Registration plate issues | 35 |
| Registration plate lamp issues | 21 |
| Rear reflector missing (4.8.2 (a) (ii)) | 16 |
| Horn not working |1.7.3a| | 10 |
| Offside Front Footrest insecure |6.2.1a| | 10 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Horn not working (7.7 (a)) | 5 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Stop lamp does not emit a steady light |1.3.1b| | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Offside Front Position lamp not working (4.2.1 (a)) | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside 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 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| 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| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Rear 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| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear All direction indicators obviously incorrectly positioned |4.4.3 |a|| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |