| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 87 |
| Registration plate lamp issues | 46 |
| Registration plate issues | 28 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 26 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 25 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 19 |
| Rear reflector on motorcycle missing |1.4.1| | 19 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 18 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 13 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 12 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Horn not working |1.7.3a| | 12 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 11 |
| Stop lamp remains on when the brakes are released | 10 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 10 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Drive chain excessively tight |6.2.1d| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Front Brake excessively binding (1.2.1 (f)) | 6 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Brake excessively binding |1.2.1 |f|| | 5 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Horn not working |1.7.3a| | 4 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 4 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Brake disc|s| cracked |3.2.A1g| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Front position lamp incorrect colour |1.1.2a| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Rear Brake excessively binding |1.2.1 |f|| | 3 |
| An item not tested |Manual| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 3 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 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 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Offside Front position lamp incorrect colour |1.1.2a| | 2 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |