| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 17 |
| Headlamp aim out of alignment | 15 |
| Registration plate issues | 14 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Horn not working |1.7.3a| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Registration plate lamp issues | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Brake hose damaged | 2 |
| Direction indicator missing |1.5.1a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| 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| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake performance not tested |3.3| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Brake lever pivots excessively worn |3.1.3a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Horn missing |1.7.1| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Inner Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Inner Rear Upper Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Position lamp not working front side light inop |4.2.1 |a|| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies front handle bar lever switch |1.3.1a| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake disc significantly and obviously worn front brake disc worn below limit (1.1.14 (a) (i)) | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Rear Brake caliper inadequately mounted and braking performance affected rear brake caliper not in mounting slot (1.1.16 (c) (ii)) | 1 |
| Position lamp switch does not illuminate all position lamps with a single operation front position lamp does not come on with the rear one (4.2.2 (a)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Shock absorber has an excessively worn bush top and bottom shock bushes worn (5.3.2 (c)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock fouling on headlight (2.1.4 (a)) | 1 |
| Throttle operating incorrectly throttle does not return correctly (6.2.7 (a) (i)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake component inadequately mounted (1.1.21 (c)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front stop light switch does not function (4.3.2 (a) (iii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |