| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 50 |
| Registration plate issues | 28 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Horn not working |1.7.3a| | 4 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Offside Rear 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 |
| 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 |
| Registration plate lamp issues | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Headlamp at least one does not illuminate on dipped beam dip switch |1.2.2a|i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front 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 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Stop lamp not working Brake light pressure switch faulty |4.3.1 |a| |ii|| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Sidecar direction indicator missing |1.5.1a| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Sidecar wheel alignment has excessive toe-in |5.3.1b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Nearside Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Offside Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear 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 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Offside Rear Drive belt excessively loose (6.1.7 (c) (i)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Drive belt so worn it is likely to fail belt split (6.1.7 (c) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Stop lamp not working does not operate immediately when rear brake applied (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Rear Lower Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Central Front Steering wheel spokes fractured (2.2.1 (c) (i)) | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect unit is fitted upside down (4.1.2 (c)) | 1 |
| Rear Drive belt excessively tight (6.1.7 (k) (i)) | 1 |
| Brake performance unable to be tested Not carried out due to condition off rear brake (1.2.1 (g)) | 1 |