| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Registration plate issues | 10 |
| 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| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Parking brake: efficiency below requirements |3.7.B.7| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Brake hose damaged | 1 |
| Nearside Front Brake hose fouling |3.2.B3b| | 1 |
| Centre Headlamp not working on dipped beam |1.7.5a| | 1 |
| Centre Headlamp not working on main beam |1.7.5a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp emits other than a steady red light no front brake lever brake light |1.3.1b| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Brake performance not tested |3.3| | 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 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Rear brake binding | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar vehicle fitted with a standard silencer in average condition rear silencer is missing |7.1.4| | 1 |
| Brake rod modified and seriously weakened |3.5.1n| | 1 |
| Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.B.7| | 1 |
| Rear Stop lamp not working |1.2.1b| | 1 |
| Rear Hydraulic brake cylinder leaking hydraulic fluid |3.6.A.1| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam both sides |4.1.1 |a| |ii|| | 1 |
| Service brake: efficiency below requirements |3.7.B.7| | 1 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Horn not working |1.7.3a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |