| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Registration plate issues | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Horn not working |1.7.3a| | 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 |