| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 94 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 45 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 41 |
| Registration plate issues | 33 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 22 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 22 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 21 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 20 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 20 |
| Registration plate lamp issues | 19 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Throttle operating incorrectly |6.2.1f| | 16 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 15 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 14 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 12 |
| Drive chain excessively loose |6.2.1d| | 12 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 11 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 11 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 11 |
| Front Brake excessively binding (1.2.1 (f)) | 11 |
| Steering headbearing has excessive free play |2.2.2| | 10 |
| Headlamp aim beam image kick up to the offside |1.6| | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Front Brake disc|s| cracked |3.2.A1g| | 7 |
| Front Brake excessively binding |1.2.1 |f|| | 7 |
| Drive chain worn to excess |6.2.1e| | 7 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Exhaust excessively deteriorated |7.1.1a| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Horn not working |1.7.3a| | 6 |
| Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 6 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 5 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 5 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Front An item not tested |Manual| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 4 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 4 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 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 Horn not working |1.7.3a| | 3 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front mudguard insecure |2.3.7| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |