| Most common failures | No# failures |
|---|
| Headlamp aim beam image kick up to the offside |1.6| | 41 |
| Headlamp aim out of alignment | 37 |
| Drive chain excessively loose |6.2.1d| | 27 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 24 |
| Registration plate lamp issues | 22 |
| Registration plate issues | 20 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 18 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 16 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Throttle operating incorrectly |6.2.1f| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 7 |
| Horn not working |1.7.3a| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Rear Drive chain excessively loose |6.2.1d| | 4 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Handlebar deformed |2.1.1b| | 3 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Brake disc|s| cracked |3.2.A1g| | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Nearside Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Brake excessively binding (1.2.1 (f)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |