| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 27 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Front wheel bearings are excessively rough |2.3.5b| | 9 |
| Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Brake hose damaged | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Drive chain excessively tight |6.2.1d| | 6 |
| Offside Rear Footrest missing |6.2.1a| | 5 |
| Registration plate issues | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Fuel system component insecure |7.2.1b| | 2 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Brake pedal insecure |3.1.2a| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Offside Rear suspension component loose |2.4.A.1a| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 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 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake pipe excessively damaged |3.2.B2a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Rear Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Handlebar cracked |2.1.1b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear suspension bush has excessive free play swingarm |2.4.A2a|i|| | 1 |
| Offside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride swingarm locking ring |6.2.1h| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 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 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Steering operation impeded by a fairing Fairings insecure ! |2.1.4 |e|| | 1 |
| Offside Front Steering operation impeded by a fairing Fairing insecure! |2.1.4 |e|| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Rear Brake fluid contaminated |1.8 |a|| | 1 |
| Front Brake master cylinder leaking |1.1.10 |b| |ii|| | 1 |
| Nearside Rear Exhaust silencer likely to become detached Silencer hitting swinging arm on compression! |8.1.1 |b| |ii|| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Brake pedal mounting cracked . |3.1.2c| | 1 |
| Offside Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Offside Rear Brake pedal mounting cracked . |3.1.2c| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Brake lever mounting insecure |3.1.2a| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Drive chain excessively tight |6.2.1d| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Brake pedal cracked |3.1.2c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Rear Footrest insecure pin loose (6.2.12 (a)) | 1 |
| Rear Brake fluid reservoir fluid level dangerously low (3.2.B1d) | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts (3.2.B2c) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Horn not working (7.7 (a)) | 1 |