| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 172 |
| Registration plate issues | 128 |
| Rear Wheel spoke excessively loose |4.2.1b| | 53 |
| Rear reflector on motorcycle missing |1.4.1| | 47 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 31 |
| 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| | 31 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 30 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 30 |
| Horn not working |1.7.3a| | 29 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 26 |
| Rear reflector missing (4.8.2 (a) (ii)) | 21 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 20 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 14 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 14 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 12 |
| Nearside Front Direction indicator not working |1.5.1c| | 12 |
| Rear reflector missing |4.8.2 |a| |ii|| | 12 |
| Rear Wheel spoke missing |4.2.1b| | 12 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 11 |
| Nearside Rear Direction indicator not working |1.5.1c| | 11 |
| Rear Wheel spoke cracked. |4.2.1b| | 11 |
| Front wheel bearings have excessive free play |2.3.5b| | 10 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 9 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 9 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 9 |
| Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 8 |
| 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|| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Throttle operating incorrectly |6.2.1f| | 7 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 7 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 7 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Horn not working (7.7 (a) (ii)) | 7 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 6 |
| Registration plate lamp issues | 6 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 5 |
| Nearside Front Direction indicators not working |1.5.1c| | 5 |
| Nearside Rear Direction indicators not working |1.5.1c| | 5 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Wheel spoke excessively loose |4.2.1b| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 5 |
| Horn not working (7.7 (a)) | 5 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Offside Front Footrest insecure |6.2.1a| | 4 |
| Front position lamp incorrect colour |1.1.2a| | 4 |
| Front mudguard insecure |2.3.7| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 4 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Brake locking device missing |3.2.A1e| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |