| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 72 |
| Registration plate issues | 53 |
| Registration plate lamp issues | 41 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 20 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front Position lamp not working (4.2.1 (a)) | 7 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Stop lamp remains on when the brakes are released | 5 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 5 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 4 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 3 |
| Horn not working |1.7.3a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Drive belt excessively loose. |6.2.1d| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Throttle operating incorrectly does not return fully, engine speed hangs up |6.2.7 |a| |i|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Central Front Position lamp not working (4.2.1 (a)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |