| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 31 |
| Stop lamp remains on when the brakes are released | 27 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 27 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 16 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 14 |
| Front Brake excessively binding (1.2.1 (f)) | 13 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 13 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 13 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 11 |
| Registration plate issues | 11 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 11 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 11 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 10 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 10 |
| Registration plate lamp issues | 9 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 9 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 9 |
| Stop lamp not working (4.3.1 (a) (ii)) | 8 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 8 |
| Horn not working (7.7 (a)) | 8 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 7 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 7 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 5 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 5 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 5 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 4 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Dipswitch does not operate immediately when selected on main beam |4.1.3 |b|| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 3 |
| Rear brake disc in such a condition that it is seriously weakened | 3 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 3 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 3 |
| Front Brake disc contaminated (1.1.14 (b)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Offside Front Direction indicator missing (4.4.1 (a) (ii)) | 3 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Nearside Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Offside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Brake performance not tested (1.2.1 (g)) | 2 |
| Front Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 2 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Central Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Front Brake grabbing severely (1.2.1 (c)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Brake performance unable to be tested (1.2.1 (g)) | 2 |
| Front Stop lamp light intensity significantly reduced (4.3.3 (a) (ii)) | 2 |