| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 14 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Registration plate issues | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Service brake: efficiency below requirements |3.7.C.1a| | 2 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 2 |
| Nearside Rear reflector missing |1.5.1a| | 2 |
| Registration plate lamp issues | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Nearside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Throttle operating incorrectly Not Returning |6.2.1f| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort Rear |3.3.A1d| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.C.1a| | 1 |
| Nearside Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Centre Headlamp not working on main beam |1.7.5a| | 1 |
| Offside Rear reflector missing |1.5.1a| | 1 |
| Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Brake performance not tested |1.2.1 |g|| | 1 |
| Rear Brake performance not tested |1.2.1 |g|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Horn not working |1.7.3a| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies operated |1.3.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Stop lamp does not illuminate immediately a brake applies FRONT BRAKE LIGHT SWITCH |1.3.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Shock absorber has negligible damping effect front forks |5.3.2 |b|| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing lock pin missing |3.2.A1j| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.C.1a| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Outer Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake component insecure anchor arm (1.1.21 (c)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front All position lamps not working (4.2.1 (a)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Shock absorber has a serious fluid leak at fork stanchion seal (5.3.2 (b)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Central Lower Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Shock absorber has a serious fluid leak L/H (5.3.2 (b)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Suspension component ball joint excessively worn (5.3.4 (a) (i)) | 1 |