| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 52 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 24 |
| Throttle operating incorrectly |6.2.1f| | 21 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 20 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 18 |
| Registration plate issues | 15 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 14 |
| Front wheel bearings have excessive free play |2.3.5b| | 13 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 12 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Handlebar deformed |2.1.1b| | 11 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Front wheel bearings are excessively rough |2.3.5b| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Offside Front Direction indicator not working |1.5.1c| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Exhaust excessively deteriorated |7.1.1a| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Offside Rear Footrest insecure |6.2.1a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 5 |
| Nearside Footrest insecure |6.2.1a| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Offside Footrest insecure |6.2.1a| | 4 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 3 |
| Front Brake disc|s| cracked |3.2.A1g| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Offside Rear Direction indicator insecure |1.5.3b| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| An item not tested |Manual| | 3 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Offside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front position lamp missing |1.1.1a| | 2 |
| 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| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Brake hose leaking fluid |3.2.B4| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Horn not working |1.7.3a| | 2 |
| Headlamp incorrect colour |1.2.1| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Handlebar deformed |2.1.1b| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Headlamp switch insecure |1.2.4| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Horn not working (7.7 (a)) | 2 |