| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 33 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 32 |
| Headlamp aim out of alignment | 31 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 20 |
| Registration plate issues | 17 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 15 |
| Horn not working |1.7.3a| | 14 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 13 |
| Steering headbearing has excessive free play |2.2.2| | 12 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 11 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 11 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 10 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Direction indicator incorrect colour |1.5.1b| | 8 |
| Riders seat insecure |6.2.1a| | 8 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 7 |
| Front Steering headbearing has excessive free play |2.2.2| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Offside Rear Direction indicator not working |1.5.1c| | 5 |
| Headlamp aim not tested |1.6| | 5 |
| Front Direction indicator incorrect colour |1.5.1b| | 5 |
| Rear Direction indicator incorrect colour |1.5.1b| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Fuel cap sealing washer missing |7.2.2c| | 5 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Headlamp insecure |1.2.3b| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Handlebar mounting clamp loose |2.1.1a| | 4 |
| Front suspension has inadequate damping effect. |2.3.6c| | 4 |
| Nearside Steering lock stop ineffective |2.1.3| | 4 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 4 |
| Offside Steering lock stop ineffective |2.1.3| | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Indicator switch defective |1.5.4| | 3 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 3 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Rear position lamp incorrect colour |1.1.2b| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear wheel insecure |4.2.3b| | 2 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Front mudguard insecure |2.3.7| | 2 |
| Nearside Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Direction indicator incorrect colour |1.5.1b| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| 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| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear wheel spindle loose |2.4.A.2b| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |