| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Horn not working |1.7.3a| | 2 |
| Fuel cap leaking (6.1.3 (b) (i)) | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Lower Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear 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 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Front Brake cylinder severely corroded |3.2.B1b| | 1 |
| Offside Front Brake cylinder severely corroded |3.2.B1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Front suspension assembly has an insecure fork brace |2.3.4d| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Centre Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Rear reflector missing reflector fitted (4.8.2 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort after test left disc cold right disc hot (1.2.1 (e)) | 1 |
| Offside Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Central Rear Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Nearside Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Rear suspension component loose |2.4.A.1a| | 1 |
| Fuel system component leaking carbs (6.1.3 (b) (i)) | 1 |
| Fuel tank leaking tap (6.1.3 (b) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |