| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 8 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Registration plate issues | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear brake binding | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Nearside Front 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 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Front Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Centre Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Horn not working |1.7.3a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Brake lever has inadequate reserve travel |9.3.1f| | 1 |
| Brake pedal has insufficient reserve movement |3.3.A.5| | 1 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Braking system leaking |3.6.A.1| | 1 |
| Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.C.1a| | 1 |
| Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Rear Panhard rod attachment bracket/mounting insecure |2.4.G.1| | 1 |
| Nearside Rear Brake performance not tested |3.7.A.1| | 1 |
| Hazard warning tell tale not working correctly |1.4.B.1e| | 1 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 1 |
| Steering control restriction of the free movement of the steering |9.2.2a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Brake component is fractured |3.1.5| | 1 |
| Rear Brake component has an inadequate repair |3.1.5| | 1 |
| Sidecar front position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Headlamp aim beam image kick up to the offside |1.6.B1| | 1 |
| Nearside Obligatory mirror missing |8.1.1| | 1 |
| Offside Obligatory mirror missing |8.1.1| | 1 |
| Nearside Front shock absorber leaking oil |9.2.7b| | 1 |
| Offside Front shock absorber leaking oil |9.2.7b| | 1 |
| Steering system excessively rough |2.2.D.1| | 1 |
| Central Headlamp insecure |1.7.3| | 1 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 1 |
| Nearside Stop lamp not working |1.2.1b| | 1 |
| Offside Stop lamp not working |1.2.1b| | 1 |
| Horn not working |1.6.2a| | 1 |
| Nearside Brake cable insecure |3.5.1d| | 1 |
| Centre Front wheel bearing has excessive play |2.5.A.3c| | 1 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 1 |
| Rear Brake pedal spongy |3.3.B.1b| | 1 |
| Nearside Rear reflector missing |1.5.1a| | 1 |
| Offside Rear reflector missing |1.5.1a| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Nearside Headlamp switch insecure |1.2.4| | 1 |
| Rear Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front position lamp missing (1.1.1a) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 1 |
| Front Headlamp at least one does not illuminate on main beam (1.2.2a(ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Nearside Fuel tank leaking (6.1.3 (b) (i)) | 1 |