| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 65 |
| Rear reflector on motorcycle missing |1.4.1| | 34 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 23 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 21 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Registration plate issues | 15 |
| Nearside Front Direction indicator not working |1.5.1c| | 14 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Registration plate lamp issues | 12 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 11 |
| Offside Front Direction indicator not working |1.5.1c| | 11 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 11 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Offside Front Direction indicators not working |1.5.1c| | 8 |
| Stop lamp remains on when the brake is released |1.3.1e| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Nearside Front Direction indicators not working |1.5.1c| | 5 |
| Indicator tell tale not functioning |1.5.2| | 5 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Front position lamp missing |1.1.1a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front Position lamp not working (4.2.1 (a)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Steering lock stop maladjusted |2.1.3| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear wheel spindle loose |2.4.A.2b| | 2 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Nearside Front Direction indicator missing |1.5.1a| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Nearside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |