| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 137 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 87 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 67 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 61 |
| Horn not working |1.7.3a| | 52 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 50 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 49 |
| Riders seat insecure |6.2.1a| | 49 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 36 |
| Registration plate issues | 26 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 21 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 21 |
| Fuel cap sealing washer missing |7.2.2c| | 20 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 19 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 19 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 18 |
| Throttle operating incorrectly |6.2.1f| | 16 |
| Steering headbearing has excessive free play |2.2.2| | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Direction indicators not working |1.5.1c| | 16 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 15 |
| Exhaust excessively deteriorated |7.1.1a| | 14 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 13 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Stop lamp remains on when the brake is released |1.3.1e| | 11 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 11 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 8 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 8 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 8 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| All direction indicators not working (4.4.1 (a) (ii)) | 7 |
| Nearside Front Direction indicator not working |1.5.1c| | 7 |
| Motorcycle structure excessively corroded |6.1.1a| | 7 |
| Front suspension has inadequate damping effect. |2.3.6c| | 7 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 7 |
| Headlamp aim not tested |1.6| | 7 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 7 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 7 |
| Stop lamp remains on when the brakes are released | 6 |
| Front Horn not working |1.7.3a| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 6 |
| Horn control defective |1.7.2a| | 6 |
| Horn not working (7.7 (a) (ii)) | 6 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 6 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 6 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 5 |
| Offside Steering lock stop ineffective |2.1.3| | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 5 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 5 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Fuel system component leaking |7.2.1a| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 4 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Rear wheel insecure |4.2.3b| | 4 |
| Riders seat insecure (6.2.5 (a) (ii)) | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 4 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 4 |
| Nearside Direction indicator not working |1.5.1c| | 4 |
| Offside Indicator tell tale not functioning |1.5.2| | 4 |
| Headlamp insecure |1.2.3b| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 4 |
| Headlamp switch faulty |1.2.4| | 4 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Headlamp aim not tested (4.1.2 (b)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Rear Brake lever mounting insecure |3.1.2a| | 3 |
| Rear Brake lever mounting cracked |3.1.2c| | 3 |
| Front suspension assembly component excessively bent |2.3.1| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Front Direction indicator not working |1.5.1c| | 3 |
| Rear Direction indicator not working |1.5.1c| | 3 |
| Rear Direction indicators not working |1.5.1c| | 3 |
| Front Motorcycle structure excessively corroded |6.1.1a| | 3 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 3 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 3 |
| Fuel hose leaking |7.2.1a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Offside Front Direction indicator insecure |1.5.3b| | 3 |
| Lower Motorcycle structure excessively corroded |6.1.1a| | 3 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 3 |
| Nearside Steering lock stop ineffective |2.1.3| | 3 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Centre Lower Motorcycle structure excessively corroded |6.1.1a| | 3 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Riders seat insecure (6.2.1a) | 3 |
| Nearside Indicator tell tale not functioning (1.5.2) | 3 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 3 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| 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| | 3 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |