| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 74 |
| Registration plate lamp issues | 28 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 21 |
| Front Brake excessively binding (1.2.1 (f)) | 21 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 16 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 15 |
| Stop lamp remains on when the brakes are released | 15 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 13 |
| Registration plate issues | 11 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 11 |
| Throttle operating incorrectly |6.2.1f| | 10 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 10 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 9 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 8 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 8 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 7 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Rear Position lamp not working (4.2.1 (a)) | 5 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Riders seat insecure (6.2.5 (a) (ii)) | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp aim not tested |4.1.2 |b|| | 4 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Headlamp aim not tested |1.6| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Headlamp aim not tested (4.1.2 (b)) | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Exhaust system insecure (6.1.2 (a)) | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Offside Front Position lamp not working (4.2.1 (a)) | 3 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 2 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Central Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 2 |
| Headlamp reflector seriously defective (4.1.1 (b) (ii)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |