| Most common failures | No# failures |
|---|
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Headlamp aim out of alignment | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Horn not working |1.7.3a| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Drive chain sprocket carrier worn to excess bearing |6.2.1e| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front Brake hose damaged and likely to fail |1.1.12 |a|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake drum|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Centre Rear Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Exhaust mounting missing |7.1.1c| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Offside Drive chain excessively loose |6.2.1d| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Motorcycle structure has excessive corrosion which adversely affects braking or steering |6.1.1 |c| |ii|| | 1 |
| Suspension arm corroded and seriously weakened |5.3.3 |b| |i|| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Stop lamp not working when operated from rear control (4.3.1 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |