| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 187 |
| Registration plate issues | 41 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 23 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Steering headbearing has excessive free play |2.2.2| | 18 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 18 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Drive chain excessively loose |6.2.1d| | 15 |
| Headlamp aim beam image kick up to the offside |1.6| | 14 |
| 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| | 13 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 12 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Drive chain excessively tight |6.2.1d| | 12 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 10 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 10 |
| Registration plate lamp issues | 9 |
| Front wheel bearings are excessively rough |2.3.5b| | 9 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 8 |
| Horn not working |1.7.3a| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 7 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 6 |
| Nearside Front Direction indicators not working |1.5.1c| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Rear Brake excessively binding (1.2.1 (f)) | 5 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Offside Rear Direction indicators not working |1.5.1c| | 4 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Horn not working (7.7 (a)) | 4 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 4 |
| Front position lamp incorrect colour |1.1.2a| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Offside Front Footrest insecure |6.2.1a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Headlamp aim beam image too far to the right |1.6.4| | 3 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 3 |
| Drive chain excessively loose (6.2.1d) | 3 |
| Rear Roller brake test indicates a binding brake (3.3.A1a) | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |