| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 38 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 33 |
| Throttle operating incorrectly |6.2.1f| | 20 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 13 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 9 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Registration plate issues | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Nearside Front Direction indicators not working |1.5.1c| | 7 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Horn not working |1.7.3a| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 6 |
| Riders seat insecure |6.2.1a| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 4 |
| Front Brake pipe inadequately supported |3.2.B2b| | 4 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear Brake disc|s| cracked |3.2.A1g| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 3 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 3 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Nearside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Brake pedal cracked |3.1.2c| | 2 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear Brake performance not tested |3.3| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Nearside Direction indicator not working |1.5.1c| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear Brake lever excessively corroded |3.2.A1c| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| All direction indicators missing |4.4.1 |a| |ii|| | 2 |