| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 27 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 16 |
| Registration plate issues | 15 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 14 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 5 |
| Horn not working |1.7.3a| | 4 |
| 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| | 4 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Riders seat insecure |6.2.1a| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 2 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Direction indicators not working |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Brake master cylinder insecure |1.1.10 |c|| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Front Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Front Front wheel spindle loose |2.3.5a| | 1 |
| Rear Fuel cap sealing washer torn |7.2.2c| | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Offside Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Offside Front Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Central Rear Upper Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Brake linkage has abnormal movement due to excessive wear Front Brake Adjustment nut/ thread stripped. |3.2.A1i| | 1 |
| Front Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Roller brake test No brake control achieves an efficiency of 30% |1.2.2 |a| |i|| | 1 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Front Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front suspension assembly component cracked |2.3.1| | 1 |
| Offside Rear Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Centre Front Upper Headlamp insecure |1.2.3b| | 1 |
| Front Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen pattern is "spot light" (4.1.2 (a)) | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |