| Most common failures | No# failures |
|---|
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 60 |
| Headlamp aim out of alignment | 49 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 39 |
| Steering headbearing has excessive free play |2.2.2| | 38 |
| Rear reflector on motorcycle missing |1.4.1| | 37 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 36 |
| Horn not working |1.7.3a| | 32 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 30 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 21 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 20 |
| Registration plate issues | 18 |
| Direction indicators not working |1.5.1c| | 17 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 17 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 15 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 14 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 13 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 13 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 12 |
| Offside Front Direction indicator not working |1.5.1c| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Throttle operating incorrectly |6.2.1f| | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear reflector on motorcycle obscured |1.4.1| | 12 |
| Front Brake lever insecure |3.1.2a| | 12 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Front Steering headbearing has excessive free play |2.2.2| | 11 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 10 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Fuel cap sealing washer missing |7.2.2c| | 8 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 8 |
| Front Direction indicators not working |1.5.1c| | 7 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 7 |
| 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| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Front Brake lever mounting insecure |3.1.2a| | 7 |
| Riders seat insecure |6.2.1a| | 7 |
| Nearside Front Direction indicator not working |1.5.1c| | 7 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 7 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Offside Rear Direction indicator not working |1.5.1c| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Headlamp aim not tested |1.6| | 6 |
| Horn control defective |1.7.2a| | 6 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 6 |
| Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Indicator tell tale not functioning |1.5.2| | 6 |
| Front suspension assembly component excessively corroded. |2.3.1| | 6 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 6 |
| Rear Direction indicators not working |1.5.1c| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Nearside Rear Direction indicator not working |1.5.1c| | 5 |
| Fuel system component leaking |7.2.1a| | 5 |
| Front Horn not working |1.7.3a| | 5 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 4 |
| Rear position lamp incorrect colour |1.1.2b| | 4 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 4 |
| Offside Front Brake lever insecure |3.1.2a| | 4 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 4 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 4 |
| Front Direction indicator incorrect colour |1.5.1b| | 4 |
| Exhaust excessively deteriorated |7.1.1a| | 4 |
| 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| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 3 |
| Front Brake hose fouling |3.2.B3b| | 3 |
| Nearside Front Direction indicator insecure |1.5.3b| | 3 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Front Throttle operating incorrectly |6.2.1f| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Rear Brake lever mounting insecure |3.1.2a| | 3 |
| Stop lamp emits other than a steady red light |1.3.1b| | 3 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 3 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Direction indicator incorrect colour |1.5.1b| | 3 |
| Exhaust mounting missing |7.1.1c| | 3 |
| Rear Brake lever insecure |3.1.2a| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Nearside Handlebar handgrip missing |2.1.1c| | 2 |
| Offside Handlebar handgrip missing |2.1.1c| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Fuel hose leaking |7.2.1a| | 2 |
| Rear Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 2 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Nearside Brake lever mounting insecure |3.1.2a| | 2 |
| Front suspension assembly component excessively misaligned |2.3.1| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Direction indicator not working |1.5.1c| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear suspension bush has excessive free play engine mounts |2.4.A2a|i|| | 2 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 2 |
| Front Direction indicator insecure |1.5.3b| | 2 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Brake lever mounting insecure |3.1.2a| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |