| Most common failures | No# failures |
|---|
| Registration plate issues | 46 |
| Rear reflector on motorcycle missing |1.4.1| | 37 |
| Headlamp aim out of alignment | 25 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Front wheel bearings are excessively rough |2.3.5b| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 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 wheel bearings have excessive free play |2.3.5b| | 5 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Rear position lamp incorrect colour |1.1.2b| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Inner Front Front position lamp missing |1.1.1a| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Nearside Lower Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Drive belt worn to excess |6.2.1e| | 1 |
| Nearside Rear Lower Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Registration plate lamp issues | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake lever cracked |3.1.2c| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Centre Upper Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Rear Upper Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front Headlamp insecure high beam unit cracked |lense retaining plastic| and loose. |4.1.1 |c|| | 1 |
| Front Upper Engine mounting/bracket damaged or deteriorated resulting in excessive movement engine mount knocking bush adrift from metal perished |6.1.8 |a| |i|| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Centre Rear Lower 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| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Steering linkage component insecure (2.1.3 (a) (i)) | 1 |
| Front Brake caliper insecure |1.1.16 |c| |i|| | 1 |