| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 20 |
| Rear reflector on motorcycle missing |1.4.1| | 15 |
| Registration plate issues | 10 |
| Headlamp aim beam image kick up to the offside |1.6| | 10 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Horn not working |1.7.3a| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil fork seal leaking |2.3.3| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Central Front Upper Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Throttle operating incorrectly not returning fully |6.2.7 |a| |i|| | 1 |
| Offside Front Brake component has restricted free movement and operation is likely to be impeded Front off side caliper excessively binding |3.2.A1h| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Throttle operating incorrectly sticking [over adjusted] |6.2.1f| | 1 |
| Nearside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Stop lamp does not illuminate immediately a brake applies does not work on hand lever |1.3.1a| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Fuel system component insecure Fuel tank |7.2.1b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Floor brake test indicates a sticking brake front brake self applies on right hand steering lock |3.3.C2c| | 1 |
| Exhaust mounting does not fully support the exhaust system bolt missing rear can |7.1.1.c| | 1 |
| Front Brake hose which buldges hose expands under load |3.2.B4| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Rear 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 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Rear suspension movement is excessively stiff (2.4.A.3b) | 1 |
| Rear Stop lamp not working rear switch (4.3.1 (a) (ii)) | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Vehicle identification number not permanently displayed |6.3.5a| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |