| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 13 |
| Registration plate issues | 9 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 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 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Horn not working |1.7.3a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 2 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Central Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front All direction indicators obviously incorrectly positioned indicators not working when bike reved (4.4.3 (a)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Front Front position lamp missing |1.1.1a| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| An item not tested |Manual| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Centre Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Central Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Front Lower Chain guard insecure |6.2.1c| | 1 |
| Nearside Front Upper Indicator switch insecure |1.5.4| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride split pin |6.2.1h| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Motorcycle structure adversely modified |6.1.1b| | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Horn missing |1.7.1| | 1 |
| Front position lamp does not illuminate immediately when switched on not working |1.1.3a| | 1 |