| Most common failures | No# failures |
|---|
| Registration plate issues | 43 |
| Headlamp aim out of alignment | 23 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Front Direction indicator incorrect colour |1.5.1b| | 4 |
| Rear Direction indicator incorrect colour |1.5.1b| | 4 |
| 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 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Stop lamp not working fit a new bulb (4.3.1 (a) (ii)) | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Exhaust has part of the system missing |7.1.1a| | 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 |
| Horn not working |1.7.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded pads unevenly worn |3.2.A1h| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort 35 kgf fluctuation pulsations through lever |3.3.A1d| | 1 |
| Brake pipe excessively corroded | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Front Brake cylinder operating mechanism has excessive travel (1.1.16 (e) (i)) | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 1 |
| Offside Front Position lamp not working |4.2.1 |a|| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Drive belt so worn it is likely to fail stone damage through drive belt core. |6.1.7 |c| |ii|| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |