| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Registration plate issues | 3 |
| Horn not working |1.7.3a| | 3 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Brake locking device missing |3.2.A1e| | 3 |
| Rear Wheel spoke excessively loose |4.2.1b| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Front Footrest insecure |6.2.1a| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 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 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced (6.1.1 (c) (i)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Offside Front Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Nearside Rear Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Offside Rear Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Offside Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Brake locking device insecure Front brake cam lever loose |3.2.A1e| | 1 |
| Brake locking device insecure Rear brake cam lever loose |3.2.A1e| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Wheel fixing missing |single fixing| |5.2.1 |a| |ii|| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Brake component modification unsafe |1.1.21 |d| |i|| | 1 |
| Rear Brake component modification unsafe |1.1.21 |d| |i|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Nearside Front Lower Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Nearside Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Upper Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Fuel hose leaking |7.2.1a| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Plate brake test No brake control achieves an efficiency of 30%. |3.3.B2a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Horn missing |1.7.1| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Front Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure rear mudguard insecure,excess corrosion. |6.1.1 |b| |i|| | 1 |
| Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Suspension arm attachment bracket/mounting insecure swingarm bolt (5.3.3 (a) (i)) | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Wheel spoke excessively bent |4.2.1b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Handlebar mounting clamp loose Handlebars loose on mounting |2.1.1a| | 1 |
| Rear wheel spindle securing nut locking device insecure Split pin missing |2.4.A.2b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |