| Most common failures | No# failures |
|---|
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 10 |
| Headlamp aim out of alignment | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear suspension bearing has excessive free play swinging arm |2.4.A2a|i|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Centre Front Horn is not a constant note |1.7.3c| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on corrosion in bulb fitting |1.1.3a| | 1 |
| Nearside Rear Footrest insecure pin loose |6.2.1a| | 1 |
| Central Rear Position lamp not working bulb |4.2.1 |a|| | 1 |
| Central Rear Stop lamp does not illuminate immediately a brake applies bulb loose |1.3.1a| | 1 |
| Sidecar suspension has an insecure unit. |5.2.3a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Steering headbearing in such a condition that steering control is adversely affected head stock nut loose-retightened (2.2.2 (f) (ii)) | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |