| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 48 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Registration plate issues | 14 |
| Drive chain excessively loose |6.2.1d| | 13 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 13 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Horn not working |1.7.3a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Exhaust excessively deteriorated |7.1.1a| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Stop lamp remains on when the brakes are released | 6 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 5 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 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 Position lamp not working (4.2.1 (a)) | 3 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Footrest missing (6.2.12 (a)) | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |