| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 23 |
| Parking brake: efficiency below requirements |3.7.B.7| | 12 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear parking brake recording little or no effort | 6 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Horn not working |1.6.2a| | 5 |
| Brakes imbalanced across an axle | 5 |
| Windscreen wiper does not clear the windscreen effectively | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Horn not working |1.7.3a| | 4 |
| Registration plate lamp issues | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear brake binding | 3 |
| Service brake: efficiency below requirements |3.7.B.7| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 3 |
| All position lamps not working |1.1.A.3b| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 2 |
| Offside Steering rack gaiter split |2.2.D.2d| | 2 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Rear brake application uneven | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 2 |
| Offside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Front Brake back plate|s| insecure |3.2.A1j| | 2 |
| Front Brake locking device missing |3.2.A1e| | 2 |
| Nearside Headlamp not in good working order |not working| |1.2.4a| | 2 |
| Offside Headlamp not in good working order |not working| |1.2.4a| | 2 |
| Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 2 |
| Fuel cap/sealing device sealing washer missing |7.2.4c| | 2 |
| Brake hose excessively deteriorated | 2 |
| Offside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 2 |
| Nearside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 2 |
| Nearside Rear rear brake recording little or no effort |3.7.B.5a| | 2 |
| Offside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 2 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 1 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 1 |
| Rear Brake rod excessively damaged |3.2.A1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Offside Stop lamp not working |1.2.1b| | 1 |
| Front brake application uneven | 1 |
| Nearside Front front brakes release unevenly |3.7.B.4| | 1 |
| Offside Inner Headlamp not working on main beam |1.7.5a| | 1 |
| Windscreen wiper blade insecure | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Wheel insecure |4.2.A.1c| | 1 |
| Offside Rear Wheel insecure |4.2.A.1c| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Steering system has excessive free play detected at the steering wheel |steering rack fitted| |2.2.A.1b| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.A.3f| | 1 |
| Stop lamp not working |1.2.1b| | 1 |
| Suspension arm attachment bracket/mounting insecure |2.4.G.1| | 1 |
| Brake hose has insufficient room to move | 1 |
| Wheel fitment excessively worn between the wheel and hub spigot mounting |4.2.B.5| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Fuel hose leaking |7.2.1a| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Nearside Headlamp not working on main beam |1.7.5a| | 1 |
| Offside Headlamp not working on main beam |1.7.5a| | 1 |
| Front Front position lamp|s| not working |1.1.A.3b| | 1 |
| Rear Front position lamp|s| not working |1.1.A.3b| | 1 |
| Offside Front position lamp|s| insecure |1.1.A.3a| | 1 |
| Nearside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Offside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Nearside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Sidecar wheel bearings are excessively rough |5.2.3d| | 1 |
| Sidecar wheel bearings have excessive free play |5.2.3c| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Brake performance not tested |3.3| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Nearside Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Offside Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Steering column top mounting bracket insecure |2.1.2d| | 1 |
| Front passenger door cannot be opened from outside the vehicle |6.2.B.1b| | 1 |
| Offside Headlamp insecure |1.7.3| | 1 |
| Nearside Headlamp excessively damaged so that the light output is severely reduced |1.7.5a| | 1 |
| Rear Stop lamp not working |1.2.1b| | 1 |
| Nearside Rear Brake hose bulging under pressure |3.6.B.3| | 1 |
| Front Upper Brake pipe leaking |3.6.A.1| | 1 |
| Offside Rear Lower Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Position lamp switch faulty |1.1.A.1| | 1 |
| Nearside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Nearside Front passenger door cannot be opened from outside the vehicle |6.2.B.1b| | 1 |
| Offside Driver`s seat insecure |6.2.A.1| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 1 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Offside Front Headlamp not working on main beam |1.7.5a| | 1 |
| Nearside Front Front passenger door does not latch securely closed |6.2.B.1a| | 1 |
| Nearside Front Suspension arm has excessive play in a pin/bush |2.4.G.2| | 1 |
| Rear Mechanical brake component has restricted free movement | 1 |
| Offside Rear Vehicle structure has an unsatisfactory modification, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Nearside Rear wheel bearing rough when rotated |2.6.1| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Windscreen wiper not operating automatically when switched on |8.2.1b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 1 |
| Steering column top bearing excessively worn |2.1.2c| | 1 |
| Steering column movement between the shaft and steering wheel |2.1.2b| | 1 |
| Offside Front Suspension arm has excessive play in a pin/bush |2.4.G.2| | 1 |
| Nearside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Nearside Front Upper Suspension arm ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 1 |
| Offside Front Upper Suspension arm ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 1 |
| Mechanical brake component has restricted free movement | 1 |
| Nearside Stop lamp not working |1.2.1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 1 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 1 |
| Fuel system component leaking |7.2.3| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c| | 1 |
| Headlamp aim not tested |1.8.A.1c| | 1 |
| Offside Rear Vehicle structure is cracked, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Offside Front Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c| | 1 |
| Nearside front brake binding |3.7.B.1| | 1 |
| Offside front brake binding |3.7.B.1| | 1 |
| Horn missing |1.7.1| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 1 |
| Nearside Front Shock absorber has an excessively worn bush |2.7.4| | 1 |
| Offside Front Shock absorber has an excessively worn bush |2.7.4| | 1 |
| Nearside Front Steering system has excessive free play detected at the steering wheel |steering rack fitted| |2.2.A.1b| | 1 |
| Offside Front Front wheel bearing has excessive play |2.5.A.3c| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |