| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 53 |
| Registration plate issues | 22 |
| Rear reflector missing (4.8.2 (a) (ii)) | 17 |
| Rear reflector missing |4.8.2 |a| |ii|| | 16 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Registration plate lamp issues | 5 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Horn not working |7.7 |a| |ii|| | 4 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 4 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| All direction indicators not working (4.4.1 (a) (ii)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 2 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Vehicle identification number not displayed |0.2 |a|| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level |1.1.10 |d| |ii|| | 1 |
| Rear Stop lamp not working front brake control (4.3.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Valve stem seriously damaged valve split (5.2.3 (j)) | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Central Rear Lower Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Rear Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar Bar grip is loose. Re-glue to bars using correct adhesive |2.2.1 |d| |ii|| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock right lock revving up |2.1.4 |a|| | 1 |
| Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Handlebar grip insecure to handlebar switch gear also loose (2.2.1 (d) (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 |
| All direction indicators incorrect colour (4.4.3 (a)) | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Brake fluid contaminated |1.8 |a|| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Front Headlamp insecure bulb insecure (4.1.1 (c)) | 1 |
| Front Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Offside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Central Front Horn not working (7.7 (a)) | 1 |
| Throttle operating incorrectly cable incorrectly adjusted |6.2.7 |a| |i|| | 1 |
| Rear Stop lamp not working replaced bulb (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Direction indicator obviously incorrectly positioned minimum 180 mm (4.4.3 (a)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |