| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Headlamp aim out of alignment | 5 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| 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 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |