| Most common failures | No# failures |
|---|
| Registration plate issues | 36 |
| Rear reflector missing (4.8.2 (a) (ii)) | 18 |
| Horn not working (7.7 (a)) | 11 |
| Headlamp aim out of alignment | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Rear reflector missing |4.8.2 |a| |ii|| | 6 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Rear Position lamp not working (4.2.1 (a)) | 5 |
| Stop lamp remains on when the brakes are released | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Horn not working |7.7 |a| |ii|| | 4 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 3 |
| Horn missing |1.7.1| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Front 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 Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 2 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front shock absorber seal failed and leaking oil both |2.3.3| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Stop lamp remains on when the brake is released front switch |1.3.1e| | 1 |
| Rear Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Brake lever has inadequate reserve travel front brake/right hand lever |3.1.3b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear suspension bush has excessive free play swing arm bushes |2.4.A2a|i|| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Dipswitch does not operate immediately when selected on main beam stuck on main beam (4.1.3 (b)) | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Wheel more than one fixing loose (5.2.1 (a) (ii)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies stop light not working |1.3.1a| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Suspension arm pin or bush excessively worn swinging arm (5.3.4 (a) (i)) | 1 |
| Rear wheel bearings are excessively tight |2.4.A.2c| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Registration plate lamp issues | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Central Front Rear wheel bearings have excessive free play Rear Wheel Bearings Excessive Play |2.4.A.2c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Horn not working megahorn (7.7 (a)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Central Front Horn not working (7.7 (a)) | 1 |
| Central Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Horn control not readily accesible. |1.7.2a| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Rear Wheel spoke excessively loose X5 (5.2.2 (d)) | 1 |
| Front Position lamp switch does not illuminate all position lamps with a single operation (4.2.2 (a)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel spoke excessively loose two spokes (5.2.2 (d)) | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Clutch lever shortened so it cannot be readily operated (6.2.7 (b)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Offside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Front Steering linkage locking device missing lockistop bolt missing (2.1.3 (d)) | 1 |
| Offside Handlebar fouling on the fuel tank or bodywork on full lock MISSING LOCKSTOP BOLT (2.1.4 (b)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |