| Most common failures | No# failures |
|---|
| Registration plate issues | 43 |
| Rear reflector missing (4.8.2 (a) (ii)) | 26 |
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Horn not working (7.7 (a) (ii)) | 15 |
| Stop lamp remains on when the brakes are released | 14 |
| Rear reflector missing |4.8.2 |a| |ii|| | 13 |
| Horn not working |1.7.3a| | 12 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 10 |
| Headlamp aim out of alignment | 9 |
| Horn not working (7.7 (a)) | 9 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Registration plate lamp issues | 7 |
| Horn not working |7.7 |a| |ii|| | 6 |
| Horn missing |1.7.1| | 5 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 4 |
| Rear Position lamp not working |4.2.1 |a|| | 4 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 3 |
| Front Position lamp not working |4.2.1 |a|| | 3 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Central Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| All position lamps not working (4.2.1 (a)) | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Front Horn not working (7.7 (a)) | 2 |
| Front brake disc in such a condition that it is seriously weakened | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Horn not working temporary horn fitted time of test (7.7 (a) (ii)) | 1 |
| Wheel fixing missing (multiple fixings) offside outer spindle pinch bolt missing (5.2.1 (a) (i)) | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Offside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Suspension component pin or bush excessively worn Swing-Arm |5.3.4 |a| |i|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Position lamp switch does not operate in accordance with the requirements (4.2.2 (a)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Offside Rear Brake pedal pivot excessively worn (1.1.1 (b)) | 1 |
| Front Shock absorber has a serious fluid leak both (5.3.2 (b)) | 1 |
| Stop lamp not working on both controls (4.3.1 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Headlamp not working on dipped beam lights cut out at low revs |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam lights cut out at low revs |4.1.1 |a| |ii|| | 1 |
| All position lamps not working lights cut out at low revs |4.2.1 |a|| | 1 |
| Front Stop lamp not working front switch missing |4.3.1 |a| |ii|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Central Front Upper Headlamp not working on main beam can not start the bike so unable to check the lights (4.1.1 (a) (ii)) | 1 |
| Central Front Upper Horn not working (7.7 (a) (ii)) | 1 |
| Offside Rear Lower Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Offside Rear Lower Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Nearside Rear Lower Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Rear Lower Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Suspension arm attachment bracket/mounting insecure nut missing from rear suspension linkage bolt (5.3.3 (a) (i)) | 1 |
| Front Shock absorber has a serious fluid leak Both forks leaking (5.3.2 (b)) | 1 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Rear Lower Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Wheel more than one fixing loose PINCH BOLTS (5.2.1 (a) (ii)) | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies control |1.3.1a| | 1 |
| Rear Wheel spoke missing (5.2.2 (d)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Stop lamp missing |4.3.1 |a| |ii|| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Stop lamp not working not working when rear brake applied (4.3.1 (a) (ii)) | 1 |
| Front Valve stem seriously damaged missing and under inflated (5.2.3 (j)) | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake caliper damaged |1.1.16 |a| |i|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Rear suspension bearing has excessive free play Swing arm pivot |2.4.A2a|i|| | 1 |
| Offside Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Front Brake fluid contaminated (1.8 (a)) | 1 |
| Offside Front Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain excessively tight Several tight links (6.1.7 (k) (i)) | 1 |
| Nearside Front Handlebar grip missing (2.2.1 (d) (i)) | 1 |
| Offside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Rear Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |