| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 112 |
| Registration plate lamp issues | 33 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 31 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 30 |
| Registration plate issues | 23 |
| Stop lamp remains on when the brakes are released | 19 |
| Horn not working (7.7 (a) (ii)) | 19 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 19 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 18 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 17 |
| Horn not working |1.7.3a| | 16 |
| Horn not working |7.7 |a| |ii|| | 15 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 14 |
| Front Brake excessively binding (1.2.1 (f)) | 14 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 13 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 13 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 10 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 10 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 10 |
| Rear reflector missing (4.8.2 (a) (ii)) | 9 |
| Rear Position lamp not working (4.2.1 (a)) | 8 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 8 |
| Horn not working (7.7 (a)) | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 7 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 6 |
| Front Brake excessively binding |1.2.1 |f|| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp aim not tested (4.1.2 (b)) | 6 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 6 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 6 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 6 |
| Headlamp insecure (4.1.1 (c)) | 6 |
| Front Position lamp not working (4.2.1 (a)) | 6 |
| Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 5 |
| Front brake disc in such a condition that it is seriously weakened | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 5 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Headlamp insecure |1.2.3b| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 4 |
| Horn sound not in accordance with requirements (7.7 (c)) | 4 |
| Riders seat insecure (6.2.5 (a) (ii)) | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear Brake excessively binding |1.2.1 |f|| | 3 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Position lamp not working |4.2.1 |a|| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Headlamp aim not tested |4.1.2 |b|| | 2 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment |1.1.15 |f|| | 2 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 2 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Horn control not functioning. |1.7.2b| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Brake lever is bent and the brake cannot be readily applied |1.1.2 |d|| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 2 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Brake cable damaged (1.1.15 (a)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Wheel excessively distorted (5.2.2 (c) (i)) | 2 |
| Rear Brake drum significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Nearside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Nearside Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Rear Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 2 |
| Front Horn not working (7.7 (a) (ii)) | 2 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 2 |
| Nearside Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 2 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |