| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 5 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Registration plate issues | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Horn not working |1.7.3a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Lower Rear suspension component loose |2.4.A.1a| | 1 |
| Offside Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Nearside Headlamp switch insecure |1.2.4| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Drive chain excessively loose (6.2.1d) | 1 |
| Rear Brake disc(s) excessively worn (3.2.A1l) | 1 |
| Rear Brake component inadequately mounted disc (1.1.21 (c)) | 1 |
| Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake fluid not visible (1.1.10 (d) (iii)) | 1 |
| Central Rear Lower Rear suspension bush has excessive free play front swing arm bushes have free play |2.4.A2a|i|| | 1 |
| Central Rear Lower Rear suspension bush has excessive free play lower bush worn |2.4.A2a|i|| | 1 |
| Central Front Lower Headlamp incorrect colour dip and main different colours |1.2.1| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |