| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 35 |
| Registration plate issues | 33 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 21 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 17 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 15 |
| Rear reflector on motorcycle missing |1.4.1| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 11 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Throttle operating incorrectly |6.2.1f| | 10 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 10 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Horn not working |1.7.3a| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 7 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear position lamp insecure |1.1.1c| | 5 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Brake disc|s| cracked |3.2.A1g| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| 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| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Headlamp aim not tested |1.6| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Brake hose damaged | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Front Brake performance not tested |3.3| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Nearside Handlebar deformed |2.1.1b| | 2 |
| Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Throttle operating incorrectly |6.2.1f| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 2 |
| Centre Front Riders seat insecure |6.2.1a| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 2 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Fuel tank leaking |7.2.1a| | 2 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front Front mudguard insecure |2.3.7| | 2 |
| Nearside Front Brake hose leaking fluid |3.2.B4| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |