| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Horn not working |1.7.3a| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Rear rear brake recording little or no effort |3.7.B.5a| | 2 |
| Rear parking brake recording little or no effort | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Offside Rear Parking brake efficiency below requirements |3.7.B.7| | 2 |
| Rear brake binding | 2 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 1 |
| Lower Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Horn not working |1.6.2a| | 1 |
| Horn control insecure |1.6.1| | 1 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 1 |
| Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.C.1a| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Rear Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.B.7| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Rear Brake pipe fouled by moving parts |3.6.B.2a| | 1 |
| Steering headbearing has excessive free play |9.2.4| | 1 |
| Rear Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.B.7| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Lower Front mudguard can easily contact the wheel |2.3.7| | 1 |
| Front Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Direction indicator not working all not working with engine running |1.5.1c| | 1 |