| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Headlamp aim out of alignment | 12 |
| Registration plate issues | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Registration plate lamp issues | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Brake has no recorded effort at a wheel NO REAR BRAKE OPERATION (1.2.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp not working when brake lever applied rear brake light not working. (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Brake clevis joint insecure Securing Pin Missing from Cylinder |1.1.15 |c|| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| 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| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Drive chain sprocket so loose it is likely to fail security plate insecure (6.1.7 (c) (ii)) | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| 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| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |