| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 8 |
| Registration plate issues | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear reflector on motorcycle obscured |1.4.1| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Fuel cap sealing washer missing |7.2.2c| | 3 |
| 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| | 2 |
| Horn not working |1.7.3a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Brake lever insecure |3.1.2a| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Offside Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Offside Handlebar cracked |2.1.1b| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Engine mounting/bracket missing |6.1.8 |a| |ii|| | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment |1.1.15 |f|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Lower Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake lever mounting insecure |3.1.2a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Rear Upper Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Horn missing |1.7.1| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Lower Brake linkage excessively worn BRAKE ROD BALL ATTACHED TO THE BRAKE SLAVE CYLINDER BALL WORN |1.1.15 |b|| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Handlebar so insecure it is likely to become detached tube loose |2.2.1 |b| |ii|| | 1 |
| Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system mounting bracket broken (7.1.1.c) | 1 |
| Rear Rear shock absorber has inadequate damping effect. rear shock has no damping effect (2.4.A.3b) | 1 |
| Horn control not functioning. (1.7.2b) | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Brake performance not tested |3.3| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Headlamp aim not tested |1.6| | 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 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Front wheel has a missing wheel stud|s| |4.2.3a| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |