| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Horn not working |1.7.3a| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Brake pipe excessively corroded | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 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 Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |