| Most common failures | No# failures |
|---|
| Steering headbearing has excessive free play |2.2.2| | 18 |
| Headlamp aim out of alignment | 18 |
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Registration plate issues | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Front suspension has inadequate damping effect. |2.3.6c| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Horn not working |1.7.3a| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 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 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Fuel cap sealing washer missing |7.2.2c| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Brake performance not tested |3.3| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Nearside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 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 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Rear Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride front wheel pinch bolts loose |6.2.1h| | 1 |
| Upper Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front suspension assembly component loose |2.3.1| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |