| Most common failures | No# failures |
|---|
| Registration plate issues | 12 |
| Headlamp aim out of alignment | 11 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Horn not working |1.7.3a| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Brake performance not tested |3.3| | 2 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride brake lever |6.2.1h| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Centre Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Centre Rear Rear position lamp missing |1.1.1a| | 1 |
| Centre Front Rear position lamp missing |1.1.1a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Drive chain horseshoe locking device likely to become detached |6.1.7 |j| |ii|| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Headlamp missing |1.2.3a| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake pipe excessively damaged |3.2.B2a| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Front position lamp insecure |1.1.1c| | 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 |
| Rear Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Throttle operating incorrectly not return |6.2.1f| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on tail light not working |1.1.3a| | 1 |
| Nearside Front Direction indicator obscured bracket bent |1.5.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Wheel spindle loose |5.2.1 |c| |i|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Centre Front Front wheel has a loose wheel stud|s| |4.2.3a| | 1 |
| Centre Front Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Offside Motorcycle structure cracked |6.1.1a| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Front Brake hose connection leaking Connection to master cylinder (1.1.12 (c)) | 1 |
| Front Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |