| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 89 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 35 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 32 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 21 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 20 |
| Steering headbearing has excessive free play |2.2.2| | 16 |
| Riders seat insecure |6.2.1a| | 15 |
| Horn not working |1.7.3a| | 12 |
| Exhaust excessively deteriorated |7.1.1a| | 11 |
| Registration plate issues | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Headlamp insecure |1.2.3b| | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 6 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Fuel cap sealing washer missing |7.2.2c| | 5 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 3 |
| Direction indicator not working |1.5.1c| | 3 |
| Riders seat insecure (6.2.5 (a) (ii)) | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 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| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Brake hose damaged | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 2 |
| Horn not working (1.7.3a) | 2 |
| Fuel cap sealing washer missing (7.2.2c) | 2 |
| Rear Brake lever has inadequate reserve travel (3.1.3b) | 2 |
| Rear reflector on motorcycle missing (1.4.1) | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |