| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Horn not working |1.7.3a| | 4 |
| Fuel system component leaking |7.2.1a| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Wheel fixing missing (single fixing) (5.2.1 (a) (ii)) | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Exhaust mounting missing |7.1.1c| | 1 |
| Offside Exhaust mounting missing |7.1.1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front 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 Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Nearside 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 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 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Registration plate issues | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Lower Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Offside Rear Lower Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |