| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 33 |
| Headlamp aim out of alignment | 27 |
| Rear reflector missing (4.8.2 (a) (ii)) | 22 |
| Registration plate issues | 8 |
| Registration plate lamp issues | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Horn not working |1.7.3a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear reflector reflecting white to the rear (4.8.2 (a) (ii)) | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear Position lamp light intensity significantly reduced bulb blown |4.2.3 |a| |ii|| | 1 |
| Centre Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Rear Stop lamp missing (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working foot brake (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Outer Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake pedal anti-slip provision loose Detached on roller brake test (1.1.2 (c)) | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Throttle operating incorrectly does not return on righthand lock |6.2.7 |a| |i|| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake lagging in operation |1.2.1 |d|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Nearside Position lamp showing white light to the rear |4.2.3 |a| |ii|| | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Motorcycle structure cracked |6.1.1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Brake component insecure brake caliper (1.1.21 (c)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Stop lamp remains on when the brake is released front brake switch defective |1.3.1e| | 1 |
| Headlamp aim beam image kick up to the offside lhd headlamp fitted |1.6| | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Rear Direction indicator not working (1.5.1c) | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Brake fluid reservoir leaking hydraulic fluid Cluch fluid cap not fitted correctly |3.2.B1e| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Front brake switch wiring rectified (4.3.2 (a) (iii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies when front brake control is applied |1.3.1a| | 1 |
| Offside Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Stop lamp showing white light to the rear |4.3.3 |a| |ii|| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp incorrect colour |1.2.1| | 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 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Steering headbearing has excessive wear or free play free play with wheel raised (2.2.2 (f) (i)) | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Central Rear reflector on motorcycle missing |1.4.1| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |