| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Registration plate issues | 4 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear 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| | 1 |
| 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| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Offside Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Decelerometer brake test indicates a sticking brake |3.3.E1d| | 1 |
| Front Horn missing |1.7.1| | 1 |
| Offside Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Centre Front Lower Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Offside Rear Brake cable damaged (1.1.15 (a)) | 1 |
| Nearside Rear Brake cable has restricted free movement (1.1.15 (e)) | 1 |
| Nearside Exhaust system insecure (6.1.2 (a)) | 1 |
| Offside Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Steering locking device ineffective trapping wires on lock to lock (2.1.3 (d)) | 1 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 1 |
| Brakes imbalanced across an axle | 1 |
| Service brake: efficiency below requirements |3.7.B.7| | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Rear Stop lamp not working |1.2.1b| | 1 |
| Registration plate lamp issues | 1 |
| Front Shock absorber has a serious fluid leak |2.7.3| | 1 |
| Brake hose has insufficient room to move | 1 |
| Parking brake not fitted on at least one wheel on a 3 wheeled vehicle |3.1.1| | 1 |
| Nearside Rear Brake clevis joint locking device missing |3.5.1l| | 1 |
| Offside Rear Brake clevis joint locking device missing |3.5.1l| | 1 |
| Rear Brake pipe inadequately clipped |3.6.B.1| | 1 |
| Front Brake pipe inadequately clipped |3.6.B.1| | 1 |
| Centre Headlamp aim beam image kick up to the offside |1.8| | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Front position lamp|s| missing |1.1.A.3a| | 1 |
| Rear position lamp|s| missing |1.1.A.3a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Offside Front Footrest insecure slightly loose on brake pivot |6.2.1a| | 1 |
| Fuel tank leaking |7.2.1a| | 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 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Offside Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |