| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 54 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 47 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 33 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 28 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 24 |
| Horn not working |1.7.3a| | 23 |
| Stop lamp remains on when the brakes are released | 21 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 19 |
| Registration plate issues | 18 |
| Rear reflector on motorcycle missing |1.4.1| | 17 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 15 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 14 |
| Horn not working (7.7 (a) (ii)) | 13 |
| Rear reflector missing (4.8.2 (a) (ii)) | 13 |
| Horn not working |7.7 |a| |ii|| | 12 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 12 |
| Front Brake excessively binding (1.2.1 (f)) | 12 |
| Front Brake excessively binding |1.2.1 |f|| | 10 |
| Rear reflector on motorcycle obscured |1.4.2b| | 10 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 9 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 9 |
| Horn not working (7.7 (a)) | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Riders seat insecure (6.2.5 (a) (ii)) | 8 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 8 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 8 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 8 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 7 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Riders seat insecure |6.2.1a| | 6 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 6 |
| Front brake disc in such a condition that it is seriously weakened | 6 |
| Nearside Brake lever has insufficient reserve travel (1.1.2 (a)) | 6 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Front Position lamp not working (4.2.1 (a)) | 5 |
| Rear Brake excessively binding (1.2.1 (f)) | 5 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear reflector on motorcycle obscured |1.4.1| | 4 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Nearside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 4 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Fuel cap sealing washer torn |7.2.2c| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Horn control defective |1.7.2a| | 3 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 2 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 2 |
| Brake lever has insufficient reserve travel rear brake lever |1.1.2 |a|| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Rear reflector defective or damaged by more than 50% of the reflecting surface (4.8.1 (a) (ii)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 2 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 2 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Rear Brake lagging in operation (1.2.1 (d)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Roller brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 2 |