| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 121 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 46 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 36 |
| Front wheel bearings have excessive free play |2.3.5b| | 33 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 28 |
| Horn not working |1.7.3a| | 24 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 24 |
| Rear reflector on motorcycle missing |1.4.1| | 23 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 21 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 19 |
| Front wheel bearings are excessively rough |2.3.5b| | 16 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 15 |
| Registration plate issues | 15 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 12 |
| Steering headbearing has excessive free play |2.2.2| | 12 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Headlamp aim beam image kick up to the offside |1.6| | 11 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 11 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 9 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 9 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 9 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Rear Brake disc|s| cracked |3.2.A1g| | 7 |
| Front Position lamp not working (4.2.1 (a)) | 7 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Offside Front Direction indicator not working |1.5.1c| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 6 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 6 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 6 |
| Exhaust excessively deteriorated |7.1.1a| | 6 |
| Rear Position lamp not working (4.2.1 (a)) | 6 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Front Position lamp not working |4.2.1 |a|| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Registration plate lamp issues | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 5 |
| Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Nearside Rear Direction indicators not working |1.5.1c| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Offside Front Direction indicators not working |1.5.1c| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 3 |
| Front position lamp missing |1.1.1a| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 3 |
| Indicator switch insecure |1.5.4| | 3 |
| Headlamp incorrect colour |1.2.1| | 3 |
| Offside Rear Exhaust excessively deteriorated |7.1.1a| | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 3 |
| Offside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Riders seat insecure (6.2.5 (a) (ii)) | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |