| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Registration plate lamp issues | 3 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 3 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Registration plate issues | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Horn not working |1.7.3a| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake cable insecure | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 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 Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Brake cylinder leaking hydraulic fluid Front caliper leaking |3.2.B1e| | 1 |
| Headlamp insecure lower fixing screws missing. |1.2.3b| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock Throttle increases when turning to right |2.1.4| | 1 |
| Direction indicators flashing more than 120 times per minute All |1.5.1c| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Stop lamp remains on when the brake is released from rear lever |1.3.1e| | 1 |
| Fuel cap missing not checked seat will not release |7.2.2a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking under shield on nearside |6.1.1c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Central Front Headlamp insecure (4.1.1 (c)) | 1 |
| Nearside Fuel system component leaking |7.2.1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Offside Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Nearside Front Brake lever excessively worn broken lever |1.1.15 |b|| | 1 |
| Brake lever excessively worn |1.1.15 |b|| | 1 |
| Lower Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| 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| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |