| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Headlamp insecure |1.2.3b| | 4 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 4 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Registration plate issues | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Horn sounds harsh or grating |1.7.3c| | 3 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Rear Direction indicator missing |1.5.1a| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Horn not working |1.7.3a| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Handlebar mounting clamp loose side to side play in steering |2.1.1a| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Nearside Rear Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Centre Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Brake lever insecure |3.1.2a| | 1 |
| Nearside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Nearside Front Brake lever insecure |3.1.2a| | 1 |
| Nearside Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Brake lever has inadequate reserve travel REAR |3.1.3b| | 1 |
| Nearside Brake lever mounting insecure |3.1.2a| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake cable excessively corroded |3.2.A1b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |