| Most common failures | No# failures |
|---|
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Horn not working |1.7.3a| | 6 |
| Headlamp aim out of alignment | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Drive chain fouling another component |6.2.1d| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Registration plate issues | 2 |
| Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake hose excessively kinked |3.2.B3a| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Centre Rear Stop lamp missing |1.3.3a| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Brake hose excessively deteriorated | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Wheel spoke cracked. broken |4.2.1b| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |