| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Registration plate issues | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Nearside Fuel system component leaking |7.2.1a| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Fuel system component insecure |7.2.1b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Brake pipe union leaking fluid |3.2.B4| | 1 |
| Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Direction indicator not working All |1.5.1c| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake master cylinder severely corroded |3.2.B1b| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Brake clevis joint insecure (1.1.15 (c)) | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Brake cylinder leaking hydraulic fluid front caliper |3.2.B1e| | 1 |
| Offside Steering lock stop maladjusted |2.1.3| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Front 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 |
| Brake hose damaged | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Front Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Offside Fuel pipe leaking |7.2.1a| | 1 |
| Rear Drive chain fouling another component |6.2.1d| | 1 |
| Centre Front Upper Horn not working |1.7.3a| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Offside Fuel system component leaking |7.2.1a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake cylinder leaking hydraulic fluid caliper |3.2.B1e| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Throttle operating incorrectly sticking on |6.2.1f| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Brake hose leaking fluid Rear master cylinder link pipe split |3.2.B4| | 1 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |