| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 29 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Horn not working |1.7.3a| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Brake lever insecure |3.1.2a| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Windscreen wiper does not clear the windscreen effectively | 3 |
| Horn missing |1.7.1| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear brake binding | 2 |
| Offside front brake binding |3.7.B.1| | 2 |
| Steering system has excessive free play detected at the steering wheel |steering rack fitted| |2.2.A.1b| | 2 |
| Brake hose has insufficient room to move | 2 |
| Registration plate lamp issues | 2 |
| Horn not working |1.6.2a| | 2 |
| Front Brake drum|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Nearside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Offside Front Lower Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 1 |
| Brakes imbalanced across an axle | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Central Front Horn not working (7.7 (a) (ii)) | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Fuel system component leaking carb |7.2.1a| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| An item not tested |Manual| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Wheel spoke excessively loose loose spoke
|4.2.1b| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Nearside Lower Fuel hose leaking |7.2.1a| | 1 |
| Offside Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Fuel hose leaking |7.2.1a| | 1 |
| Rear Stop lamp insecure |1.3.3b| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Front Front suspension has a suspension upper ball joint securing nut loose |2.5.B.1a| | 1 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Horn missing |1.7.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 1 |
| Rear Stop lamp not working |1.2.1b| | 1 |
| Offside Stop lamp not working |1.2.1b| | 1 |
| Nearside Stop lamp not working |1.2.1b| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Rear Brake lining|s| insecure |3.5.1g| | 1 |
| Offside Rear Brake lining|s| insecure |3.5.1g| | 1 |
| Lower Steering column movement between the shaft and steering wheel |2.1.2b| | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Front Brake pipe inadequately clipped |3.6.B.1| | 1 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 1 |
| Nearside Front front brake recording little or no effort |3.7.B.5a| | 1 |
| Offside Front front brake recording little or no effort |3.7.B.5a| | 1 |
| Service brake: efficiency below requirements |3.7.B.7| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Brake lever mounting cracked |3.1.2c| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Front 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 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Front Brake lever has inadequate reserve travel Front Brake inadequate reserve travel-and no adjuster fitted |3.1.3b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front passenger door cannot be opened from inside the vehicle |6.2.B.1b| | 1 |
| Front passenger door cannot be opened from outside the vehicle |6.2.B.1b| | 1 |
| Front brake application uneven | 1 |
| Nearside front brake binding |3.7.B.1| | 1 |
| Nearside Front All position lamps not working |1.1.A.3b| | 1 |
| Centre Exhaust has a part missing |7.1.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 1 |
| Driver`s door cannot be opened from outside the vehicle |6.2.B.1b| | 1 |
| Steering column flexible coupling has excessive play |2.1.5| | 1 |
| Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Brake hose excessively deteriorated | 1 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Nearside Headlamp not working on main beam |1.7.5a| | 1 |
| Fuel cap/sealing device sealing washer deteriorated |7.2.4c| | 1 |
| Offside Front front brake binding |3.7.B.1| | 1 |
| Nearside Rear front brake binding |3.7.B.1| | 1 |
| Nearside Rear An item not tested |Manual| | 1 |
| Nearside Rear Brake performance not tested |3.7.A.1| | 1 |
| Nearside Rear Chain guard fouling another component |6.2.1c| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Rear Brake component is severely distorted |3.1.5| | 1 |