| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 46 |
| Registration plate lamp issues | 30 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 14 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 4 |
| Stop lamp remains on when the brakes are released | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Registration plate issues | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Drive chain worn to excess and some links are seized. (6.1.7 (c) (i)) | 1 |
| Rear Stop lamp not working switch spring (4.3.1 (a) (ii)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Nearside Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Offside Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Brake caliper inadequately mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up sprocket carrier (5.1.3 (a) (ii)) | 1 |
| Rear Brake disc contaminated rear brake disc heavily contaminated with oil / brake fluid (1.1.14 (b)) | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Throttle operating incorrectly stiff not returning to closed position (6.2.7 (a) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Nearside Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Offside Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Nearside Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Offside Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Shock absorber has a serious fluid leak left hand fork leg (5.3.2 (b)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake disc significantly and obviously worn both x 2 (1.1.14 (a) (i)) | 1 |
| Offside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Drive chain worn to excess seized links (6.1.7 (c) (i)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Steering headbearing excessively stiff or notchy Excessively Stiff (2.2.2 (f) (i)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure o/s front fairing missing cracked and dangerous (6.1.1 (b) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Nearside Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Brake caliper leaking and braking performance affected (1.1.16 (b) (ii)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Brake lever has insufficient reserve travel spongy pulls easily to bars (1.1.2 (a)) | 1 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Nearside Front Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak Fork seal leaking (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak Fork seal leaking (5.3.2 (b)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle sticking - not returning to idle (6.2.7 (a) (ii)) | 1 |
| Front Brake hose leaking o/s to n/s front brake hose leaking (1.1.12 (c)) | 1 |
| Front Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Offside Front Shock absorber has a serious fluid leak Fork leg oil seal leaking fluid. (5.3.2 (b)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak Front fork seal failed. Fork oil running down fork onto caliper and disc (5.3.2 (b)) | 1 |
| Offside Front Handlebar grip insecure to handlebar Grip spinning freely (2.2.1 (d) (ii)) | 1 |
| Nearside Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Brake caliper insecurely mounted and braking performance affected rear brake caliper mounting bracket is incorrectly
fitted |1.1.16 |c| |ii|| | 1 |
| Front Brake excessively binding Both calipers binding (1.2.1 (f)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Offside Front Upper Handlebar retaining device loose barend loose (2.2.1 (b) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Suspension arm mounting has an unsafe modification (5.3.3 (c) (i)) | 1 |
| Rear Suspension component mounting modified so the suspension is inoperative (5.3.3 (c) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle sticking (6.2.7 (a) (ii)) | 1 |
| Front Brake fluid contaminated |1.8 |a|| | 1 |
| Rear Brake fluid contaminated |1.8 |a|| | 1 |
| Headlamp aim projected beam image obviously incorrect Bulb not correctly fitted (4.1.2 (c)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Nearside Rear Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced rear subframe bolt missing (6.1.1 (b) (ii)) | 1 |
| Offside Rear Motorcycle structure joining/attachment plate or fastening insecure rear subframe bolt loose (6.1.1 (b) (i)) | 1 |
| Front Brake component modification unsafe brake lever (1.1.21 (d) (i)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock handguards hitting screen (2.1.4 (b)) | 1 |
| Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure center stand bolt lose (6.1.1 (b) (i)) | 1 |
| Offside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Front Brake disc contaminated due to fork seal leaking. (1.1.14 (b)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |