| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 51 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 27 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 20 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 19 |
| Rear Brake disc|s| cracked |3.2.A1g| | 15 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 13 |
| Offside Front Footrest insecure |6.2.1a| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Horn not working |1.7.3a| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Nearside Front Footrest insecure |6.2.1a| | 8 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 8 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 7 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear Brake excessively binding |1.2.1 |f|| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 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 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Registration plate issues | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Nearside Footrest insecure |6.2.1a| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 4 |
| Horn not working |7.7 |a| |ii|| | 4 |
| Offside 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 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Offside Footrest insecure |6.2.1a| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Offside Headlamp aim beam image too far to the right |1.6.4| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| An item not tested |Manual| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Brake pipe excessively corroded | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Clutch lever positioned so it cannot be readily operated loose (6.2.7 (b)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |