| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 51 |
| Headlamp aim out of alignment | 49 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 23 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 18 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 17 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 15 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 15 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 15 |
| Registration plate issues | 14 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 13 |
| Registration plate lamp issues | 11 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Steering headbearing has excessive free play |2.2.2| | 10 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 10 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 9 |
| Nearside Steering lock stop ineffective |2.1.3| | 8 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 7 |
| Riders seat insecure |6.2.1a| | 7 |
| Offside Steering lock stop ineffective |2.1.3| | 7 |
| Rear Position lamp not working (4.2.1 (a)) | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Headlamp aim not tested |1.6| | 6 |
| Fuel cap sealing washer missing |7.2.2c| | 6 |
| Headlamp aim not tested (4.1.2 (b)) | 5 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 4 |
| Rear Direction indicator not working |1.5.1c| | 4 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear reflector on motorcycle obscured |1.4.1| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front Direction indicator not working |1.5.1c| | 3 |
| Headlamp switch faulty |1.2.4| | 3 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Horn is not a constant note |1.7.3c| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 2 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Indicator switch defective |1.5.4| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Nearside Steering lock stop missing |2.1.3| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |