| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 79 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 44 |
| Registration plate issues | 30 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 22 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 19 |
| Horn not working |1.7.3a| | 18 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 16 |
| Riders seat insecure |6.2.1a| | 15 |
| Front wheel bearings have excessive free play |2.3.5b| | 15 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 14 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 12 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 11 |
| Steering headbearing has excessive free play |2.2.2| | 10 |
| Headlamp insecure |1.2.3b| | 10 |
| Fuel cap sealing washer missing |7.2.2c| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 9 |
| Headlamp aim beam image kick up to the offside |1.6| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Brake hose damaged | 6 |
| Exhaust excessively deteriorated |7.1.1a| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Rear Position lamp not working (4.2.1 (a)) | 5 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Registration plate lamp issues | 4 |
| Front Horn not working |1.7.3a| | 4 |
| Offside Rear Direction indicators not working |1.5.1c| | 4 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Direction indicator not working |1.5.1c| | 3 |
| Rear Brake lever insecure |3.1.2a| | 3 |
| Front position lamp insecure |1.1.1c| | 3 |
| Rear Front mudguard insecure |2.3.7| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 2 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |