| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 31 |
| Registration plate issues | 19 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Horn not working |1.7.3a| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Headlamp switch faulty |1.2.4| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Direction indicator not working |1.5.1c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Brake hose excessively deteriorated | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Offside Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Brake hose damaged | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Centre Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Wheel bearing has excessive play adjust |5.1.3 |a| |i|| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Horn missing |1.7.1| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Throttle operating incorrectly loose on handlebars |6.2.1f| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear Lower Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Nearside Front Lower Fuel system component insecure |7.2.1b| | 1 |
| Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Centre Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Brake pipe union leaking fluid Hose connection |3.2.B4| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front suspension assembly component cracked Spindle clamp |2.3.1| | 1 |
| Rear suspension bush has excessive free play Swinging arm |2.4.A2a|i|| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front suspension assembly component cracked |2.3.1| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Fuel hose leaking |7.2.1a| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |