| Most common failures | No# failures |
|---|
| Registration plate issues | 99 |
| Rear reflector on motorcycle missing |1.4.1| | 75 |
| Headlamp aim out of alignment | 69 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 27 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 23 |
| Horn not working |1.7.3a| | 23 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Rear reflector missing (4.8.2 (a) (ii)) | 19 |
| Front wheel bearings have excessive free play |2.3.5b| | 18 |
| Drive chain worn to excess |6.2.1e| | 17 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Drive chain excessively loose |6.2.1d| | 14 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 14 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 14 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 12 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 9 |
| Rear reflector missing |4.8.2 |a| |ii|| | 8 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 8 |
| Rear Wheel spoke excessively loose |4.2.1b| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 7 |
| Front wheel bearings are excessively rough |2.3.5b| | 7 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 7 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Front Wheel spoke excessively loose |4.2.1b| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| 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| | 5 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 5 |
| Riders seat insecure |6.2.1a| | 4 |
| Horn missing |1.7.1| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Brake hose excessively deteriorated | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Registration plate lamp issues | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Fuel cap sealing washer missing |7.2.2c| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Brake excessively binding |1.2.1 |f|| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear Wheel spoke excessively loose |5.2.2 |d|| | 3 |
| Horn not working (7.7 (a)) | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Direction indicator missing |1.5.1a| | 2 |
| Rear Direction indicator missing |1.5.1a| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Direction indicator missing |1.5.1a| | 2 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Front Direction indicator missing |1.5.1a| | 2 |
| Offside Front Direction indicator missing |1.5.1a| | 2 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Wheel spoke excessively loose |4.2.1b| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Brake lever attachment screws loose |3.1.2b| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Rear An item not tested |Manual| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |