| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 38 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 35 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 28 |
| Drive chain excessively loose |6.2.1d| | 23 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 21 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Front Brake excessively binding (1.2.1 (f)) | 16 |
| Drive chain worn to excess |6.2.1e| | 12 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 9 |
| Throttle operating incorrectly |6.2.1f| | 9 |
| Headlamp aim beam image kick up to the offside |1.6| | 9 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Registration plate issues | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 6 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 4 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Horn not working |1.7.3a| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 4 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Nearside Drive chain excessively loose |6.2.1d| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front An item not tested |Manual| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |