| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Horn not working |1.7.3a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Registration plate issues | 3 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Outer Rear Direction indicators not working |1.5.1c| | 1 |
| Throttle operating incorrectly throttle sticks on full lock to the right |6.2.1f| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering lock stop ineffective throttle cables hitting fuel tank when turning to the right |2.1.3| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 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 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Inner Front Brake locking device insecure |3.2.A1e| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Valve stem seriously damaged Front valve stem rubber perished, Instant deflation possible (5.2.3 (j)) | 1 |
| Rear Rear reflector missing Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Offside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front An item not tested |Manual| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Throttle operating incorrectly sticking (6.2.7 (a) (i)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear suspension bearing has excessive free play swingarm pivot |2.4.A2a|i|| | 1 |
| Fuel system component leaking r/h carb leaking |7.2.1a| | 1 |
| Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 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 |
| Offside Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Front Brake caliper(s) insecure (3.2.A1j) | 1 |
| Offside Front Brake caliper(s) insecure (3.2.A1j) | 1 |
| Headlamp aim beam image kick up to the offside (1.6) | 1 |
| Centre Fuel system component leaking |7.2.1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Fuel system component leaking |7.2.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |