| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Registration plate issues | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Front Wheel spoke excessively loose |4.2.1b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Stop lamp does not illuminate immediately a brake applies front switch |1.3.1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Lower Fork yoke cracked |2.1.1b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Wheel bearing has excessive play FRONT (5.1.3 (a) (i)) | 1 |
| Wheel fixing missing (single fixing) (5.2.1 (a) (ii)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Drive chain excessively loose rear sprocket |6.2.1d| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies front brakelight switch sticking |1.3.1a| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Horn not working |1.7.3a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Steering operation linkage fouling when handlebars turned from lock to lock front brake pipe and lock stop (2.1.4 (a)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Handlebar grip insecure to handlebar both front grips turning on handle bars. (2.2.1 (d) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort pivot on pedal sticking |3.3.A1c| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride bolt missing from rear sprocket |6.2.1h| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Central Rear Upper All position lamps do not illuminate immediately when switched on Side light not working |1.1.3a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Fuel system component leaking stop tap |7.2.1a| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on dipped beam |1.1.3a| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |