| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Registration plate issues | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Horn not working |1.7.3a| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Stop lamp not working Changed bulb (4.3.1 (a) (ii)) | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Steering damper in such a condition that the steering action is impaired. |2.1.2d| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Brake hose damaged | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Centre Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear reflector missing reflector fitted (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| 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 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Handlebar retaining device loose both bars moving on mounting bushes, not likely to come detached (2.2.1 (b) (i)) | 1 |
| Nearside Horn control defective |1.7.2a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |