| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 24 |
| Registration plate issues | 23 |
| Front suspension has inadequate damping effect. |2.3.6c| | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 9 |
| 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| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp insecure |1.2.3b| | 6 |
| Steering linkage has excessive free play |2.2.2| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 4 |
| Front Headlamp insecure |1.2.3b| | 3 |
| Rear Direction indicator not working |1.5.1c| | 3 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| 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| | 3 |
| Horn not working |1.7.3a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front position lamp insecure |1.1.1c| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front suspension assembly component cracked |2.3.1| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front Steering linkage has excessive free play |2.2.2| | 2 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Rear Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Outer Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Brake lever cracked |3.1.2c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Upper Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Front wheel has a missing wheel bolt|s| |4.2.3a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake hose fouling insecure |3.2.B3b| | 1 |
| Rear wheel rotation likely to be impeded rubbing on mudguard |6.2.1b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Rear position lamp missing |1.1.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Steering damper ineffective |2.1.2d| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Brake performance not tested |3.3| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Centre Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Inner Front Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Built up wheel has a loose bolt/s |4.2.1c| | 1 |
| Rear suspension has a fracture of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Nearside Direction indicator obscured |1.5.1a| | 1 |
| Offside Direction indicator obscured |1.5.1a| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Centre Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Rear wheel has a loose wheel bolt|s| |4.2.3a| | 1 |
| Front Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Centre Front Headlamp insecure |1.2.3b| | 1 |
| Centre Front Steering linkage has excessive free play |2.2.2| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Front damper fixing bolt insecure |6.2.1h| | 1 |
| Direction indicators affected by the operation of another lamp both rear indicators |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp Indicators built in to rear light |1.1.3b| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 1 |
| Rear Rear wheel bearings have excessive free play (2.4.A.2c) | 1 |
| Rear Brake component damaged and seriously reduced in strength (3.2.A1) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Centre Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |