| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Registration plate issues | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Motorcycle structure cracked front n/s engine mount bolt snapped |6.1.1a| | 1 |
| Nearside Rear Lower Exhaust has part of the system missing exhaust clamp corroded / broken |7.1.1a| | 1 |
| Rear Stop lamp not working when rear brake is used (4.3.1 (a) (ii)) | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim beam image kick up to the offside (1.6) | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Exhaust has part of the system missing silencer clamp missing |7.1.1a| | 1 |
| Offside Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear All position lamps not working |4.2.1 |a|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Stop lamp not working switch |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp not working not working when rear brake is applied |4.3.1 |a| |ii|| | 1 |
| All position lamps not working no plate light |4.2.1 |a|| | 1 |
| Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp not working from front brake (4.3.1 (a) (ii)) | 1 |
| Headlamp at least one does not illuminate on dipped beam bulb 3b |1.2.2a|i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Stop lamp not working Foot (4.3.1 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Front Brake disc|s| cracked and slightly pitted |3.2.A1g| | 1 |
| Offside Front Brake disc|s| excessively pitted and starting to show signs of cracking |3.2.A1l| | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Offside Front Upper Steering operation linkage fouling when handlebars turned from lock to lock steering impeded by throttle cable routed incorrectly (2.1.4 (a)) | 1 |
| Offside Front Upper Throttle control functioning such that safe operation of the motorcycle is adversely affected Throttle sticking on due to cables being incorrectly routed (6.2.7 (a) (ii)) | 1 |