| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 19 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Registration plate lamp issues | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Horn not working |1.7.3a| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Rear Wheel fixing loose (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Brake performance not tested Rear pads too low, front brake binding |3.3| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Fuel cap leaking seal perished (6.1.3 (b) (i)) | 1 |
| Footrest insecure rear footrest seized (6.2.12 (a)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake |1.3.1a| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Footrest missing Rear footrests missing. (6.2.12 (a)) | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Stop lamp not working control 2 |4.3.1 |a| |ii|| | 1 |
| Brake disc contaminated all (1.1.14 (b)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Brake lever not releasing correctly and functionality of brakes affected soft (1.1.2 (b) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Registration plate issues | 1 |
| Stop lamp not working front lever |4.3.1 |a| |ii|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Central Front Upper Horn not working (7.7 (a)) | 1 |
| Central Front Lower Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |