| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 44 |
| Registration plate lamp issues | 32 |
| Registration plate issues | 22 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 22 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 20 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 20 |
| Front Brake excessively binding (1.2.1 (f)) | 18 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 17 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 15 |
| Stop lamp remains on when the brakes are released | 14 |
| Stop lamp not working (4.3.1 (a) (ii)) | 12 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 12 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 12 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 11 |
| Riders seat insecure (6.2.5 (a) (ii)) | 11 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 11 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 9 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 8 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 7 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 7 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 7 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 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 | 5 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 5 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 5 |
| Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Front Brake excessively binding |1.2.1 |f|| | 5 |
| Riders seat insecure |6.2.1a| | 4 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 4 |
| Front Position lamp not working (4.2.1 (a)) | 4 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 4 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 4 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Horn not working (7.7 (a)) | 4 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 4 |
| Front Brake disc contaminated (1.1.14 (b)) | 3 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Headlamp aim not tested (4.1.2 (b)) | 3 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 3 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 3 |
| Headlamp insecure (4.1.1 (c)) | 3 |
| Offside Front Direction indicator not working (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 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 3 |
| Offside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Central Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Offside Front Position lamp not working |4.2.1 |a|| | 2 |
| Front All position lamps not working (4.2.1 (a)) | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Stop lamp does not illuminate immediately a brake applies front switch |1.3.1a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 2 |
| Nearside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Exhaust system insecure (6.1.2 (a)) | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 2 |
| Rear Brake grabbing severely (1.2.1 (c)) | 2 |