| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Registration plate issues | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front mudguard can easily contact any fixed point of the motor bicycle. |2.3.7| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Fairings insecure and likely to impede the steering |2.1.2e| | 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 Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Centre Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Indicator switch defective |1.5.4| | 1 |
| All direction indicators not working do not flash |4.4.1 |a| |ii|| | 1 |
| Headlamp lens seriously defective lens misaligned |4.1.1 |b| |ii|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |