| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 20 |
| Registration plate issues | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Headlamp aim out of alignment | 9 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Horn not working |1.7.3a| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear Rear position lamp incorrect colour |1.1.2b| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 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 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 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Brake locking device insecure |3.2.A1e| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Throttle operating incorrectly Sticking |6.2.1f| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Rear position lamp insecure |1.1.1c| | 1 |
| Offside Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 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 |
| Headlamp aim not tested |1.6| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |