| Most common failures | No# failures |
|---|
| Registration plate issues | 88 |
| Rear reflector on motorcycle missing |1.4.1| | 74 |
| Headlamp aim out of alignment | 67 |
| Rear reflector missing (4.8.2 (a) (ii)) | 26 |
| Drive chain excessively loose |6.2.1d| | 12 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 12 |
| Drive chain worn to excess |6.2.1e| | 11 |
| Horn not working |1.7.3a| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear reflector missing |4.8.2 |a| |ii|| | 10 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Brake excessively binding (1.2.1 (f)) | 6 |
| Registration plate lamp issues | 6 |
| Indicator switch insecure |1.5.4| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| 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| | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Horn not working (7.7 (a)) | 3 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Rear Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 2 |
| Rear suspension component loose lower bolt . |2.4.A.1a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Nearside Headlamp switch insecure |1.2.4| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Horn is not a constant note |1.7.3c| | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |