| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Registration plate issues | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Registration plate lamp issues | 3 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Central Rear Position lamp not working |4.2.1 |a|| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Offside Rear Lower Brake linkage has abnormal movement due to maladjustment linkage sticking and not releasing |3.2.A1i| | 1 |
| Nearside Rear Drive chain excessively tight about to break, worn and too tight |6.2.1d| | 1 |
| Front Position lamp switch faulty |1.1.4a| | 1 |
| Fork yoke deformed front forks out of line |2.1.1b| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Chain guard insecure bolt missing (6.1.7 (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| All direction indicators adversely affected by the operation of another lamp number plate light |4.4.3 |b|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Motorcycle structure has a fracture which is likely to adversely affect braking or steering mudguard |6.1.1 |a| |ii|| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Brake locking device missing rear brake stabiliser |3.2.A1e| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Nearside Front Lower Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on main beam |4.1.3 |b|| | 1 |
| Rear Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Drive chain sprocket excessively loose nuts loose (6.1.7 (c) (i)) | 1 |
| Rear Wheel bearing has excessive play bearing for sprocket carrier (5.1.3 (a) (i)) | 1 |
| Rear Brake excessively binding brake sticks on (1.2.1 (f)) | 1 |
| Central Rear Upper Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Rear sprocket |6.2.1h| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 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 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Footrest missing Pillion peg (6.2.12 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |