| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 24 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Steering headbearing has excessive free play |2.2.2| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Horn not working |1.7.3a| | 6 |
| Registration plate issues | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Handlebar deformed |2.1.1b| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 4 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Steering linkage has excessive free play |2.2.2| | 2 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Direction indicator insecure |1.5.3b| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Front Direction indicator insecure |1.5.3b| | 2 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator damaged and function impaired insecure |1.5.3a| | 1 |
| Offside Rear Direction indicator damaged and function impaired insecure |1.5.3a| | 1 |
| Offside Rear Direction indicator damaged and function impaired lens insecure |1.5.3a| | 1 |
| Nearside Front Direction indicator missing lens missing
|1.5.1a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 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 |
| Rear Brake caliper|s| insecure caliper mounting lug snapped |3.2.A1j| | 1 |
| Rear Fuel system component leaking |7.2.1a| | 1 |
| Rear Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| 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 Brake component is excessively corroded |3.1.5| | 1 |
| Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Centre Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Brake hose excessively deteriorated | 1 |
| Offside Front Steering lock stop missing |2.1.3| | 1 |
| Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside 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 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Brake component leaking fluid |3.2.B4| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Front Front wheel spindle loose |2.3.3a| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Centre Front Upper Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake cylinder severely corroded |3.2.B1b| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Direction indicator insecure |1.5.3b| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear 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 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |