| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 46 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 26 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 25 |
| Rear reflector on motorcycle missing |1.4.1| | 24 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 23 |
| Front wheel bearings have excessive free play |2.3.5b| | 19 |
| Registration plate issues | 15 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Throttle operating incorrectly |6.2.1f| | 10 |
| Front wheel bearings are excessively rough |2.3.5b| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 9 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 9 |
| Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Horn not working |1.7.3a| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 4 |
| Rear Drive chain excessively loose |6.2.1d| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 4 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Front Brake disc|s| cracked |3.2.A1g| | 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 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Brake disc|s| cracked |3.2.A1g| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Nearside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Brake cylinder severely corroded |3.2.B1b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Rear Exhaust excessively deteriorated |7.1.1a| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 2 |