| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 42 |
| Registration plate lamp issues | 21 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Throttle operating incorrectly |6.2.1f| | 9 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 9 |
| Registration plate issues | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 6 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Headlamp switch faulty |1.2.4| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Front position lamp damaged and function impaired |1.1.1b| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Brake caliper|s| insecure |3.2.A1j| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Brake performance not tested |3.3| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| 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| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Horn not working |1.7.3a| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |