| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Registration plate issues | 4 |
| Horn not working |1.7.3a| | 3 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 3 |
| Upper Horn not working |1.7.3a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain link |6.2.1h| | 1 |
| Upper Front suspension assembly component loose |2.3.1| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Upper Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Front Front suspension assembly component cracked |2.3.1| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Upper Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 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 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Centre Rear Lower Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Stop lamp not working BRAKE LEVER (4.3.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Headlamp aim projected beam image obviously incorrect diagonal (4.1.2 (c)) | 1 |