| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 11 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Headlamp incorrect colour |1.2.1| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Front Riders seat insecure |6.2.1a| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Front suspension assembly component loose os damper |2.3.1| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Central Front Upper Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Central Rear Lower Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Front Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Central Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Brake hose excessively deteriorated | 1 |
| Front Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Registration plate issues | 1 |
| Rear Front mudguard can easily contact any fixed point of the motor bicycle. |2.3.7| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front Lower Front suspension assembly component loose |2.3.1| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Wheel fractured significantly reducing the original strength |4.2.1a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Gradient brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.D1b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |