| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Riders seat insecure |6.2.1a| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Direction indicators flashing less than 60 times a minute not flashing |1.5.1c| | 1 |
| Centre Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Direction indicator obscured |1.5.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Horn control not functioning. |1.7.2b| | 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 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Throttle operating incorrectly twist grip assy loose |6.2.1f| | 1 |
| Brake caliper|s| insecure rubber boot missing on slide pins |3.2.A1j| | 1 |
| Nearside Front Headlamp aim headlamp damaged and function impaired bulb not working |1.2.3a| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Direction indicator missing |1.5.1a| | 1 |
| Offside Direction indicator missing |1.5.1a| | 1 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Upper Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Centre Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Brake pedal is inoperative |3.1.3c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake lever attachment screws loose (3.1.2b) | 1 |
| Centre Front Steering linkage has excessive free play (2.2.2) | 1 |
| Centre Rear Roller brake test indicates excessive fluctuation of brake effort (3.3.A1d) | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Stop lamp remains on when the brake is released break switch sticking (1.3.1e) | 1 |
| Steering movement excessively stiff with the wheel raised On left hand lock. |2.2.1b| | 1 |
| Motorcycle structure excessively distorted Front forks bent allowing front wheel to touch bodywork on full deflection. |6.1.1a| | 1 |
| Throttle operating incorrectly Assembly loose and throttle stop inoperative. |6.2.1f| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride brake bar loos and locking pin missing |6.2.1h| | 1 |
| Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front Brake lever has inadequate reserve travel rear brake |3.1.3b| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking mud guard insecure |6.1.1c| | 1 |
| Registration plate issues | 1 |
| Rear Riders seat insecure |6.2.1a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen to offside (4.1.2 (a)) | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen wrong direction kick up |4.1.2 |a|| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |