| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 45 |
| Registration plate issues | 16 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 13 |
| Drive chain worn to excess |6.2.1e| | 11 |
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 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 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 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 |
| Nearside Rear Footrest missing |6.2.1a| | 5 |
| Offside Rear Footrest missing |6.2.1a| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 5 |
| Horn not working |1.7.3a| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Rear Direction indicator not working |1.5.1c| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Headlamp insecure |1.2.3b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Direction indicator not working |1.5.1c| | 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 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Footrest missing |6.2.1a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 2 |
| Offside Rear Direction indicator missing |1.5.1a| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Front Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Front Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Nearside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride wheel |6.2.1h| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Nearside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| An item not tested |Manual| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Lower Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Brake hose damaged | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Vehicle identification number not permanently displayed |6.3.5a| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Upper Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Centre Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Registration plate lamp issues | 1 |
| Headlamp aim not tested None Headlight Working |1.6| | 1 |
| Front Wheel spoke excessively bent |4.2.1b| | 1 |
| Front mudguard can easily contact any fixed point of the motor bicycle. Front Fender catches on frame tube |2.3.7| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Front Steering operation linkage fouling when handlebars turned from lock to lock speedo cable (2.1.4 (a)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Rear reflector missing No rear reflector. Replaced (4.8.2 (a) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Steering operation restricted in free movement from lock to lock mud guard fouling frame (2.1.4 (c)) | 1 |