| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 54 |
| Headlamp aim out of alignment | 42 |
| Registration plate issues | 27 |
| Rear reflector missing (4.8.2 (a) (ii)) | 14 |
| Registration plate lamp issues | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Horn not working |1.7.3a| | 7 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| 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 |
| Rear Footrest missing (6.2.12 (a)) | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Upper Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen dip wrong away (4.1.2 (a)) | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Throttle control functioning such that safe operation of the motorcycle is adversely affected Throttle sticking when on right hand lock. |6.2.7 |a| |ii|| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Stop lamp not working when rear brake is applied (4.3.1 (a) (ii)) | 1 |
| Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Horn not working Requires new horn (7.7 (a)) | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp not working Rear brake switch not working (4.3.1 (a) (ii)) | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp light source and lamp not compatible H I D lamps fitted. |4.1.4 |c|| | 1 |
| Front Stop lamp not working brake stop switch |4.3.1 |a| |ii|| | 1 |
| Centre Rear Rear reflector on motorcycle insecure loose |1.4.2c| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Direction indicator obviously incorrectly positioned indicators to close together (4.4.3 (a)) | 1 |
| Stop lamp adversely affected by the operation of another lamp indicators adversely affects stop lamp (4.3.3 (b)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp indicator adversely affects rear postion lamp (4.2.3 (b)) | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Central Rear Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 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 |
| Steering headbearing excessively stiff or notchy Excessively notchy (2.2.2 (f) (i)) | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Exhaust markings indicating not for road use or similar wording |6.1.2 |c|| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Rear Brake pedal insecure |1.1.2 |e| |i|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride gear shift loose |6.2.1h| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Throttle operating incorrectly sticks on right turn (6.2.7 (a) (i)) | 1 |
| Front Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Upper Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Exhaust has part of the system missing (7.1.1a) | 1 |
| Headlamp aim beam image kick up to the offside (1.6) | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Direction indicators flashing more than 120 times per minute indicators flash at more than 120 times per minute only when bike is started. |1.5.1c| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Offside Front Upper Throttle control functioning such that safe operation of the motorcycle is adversely affected handle bar weight fouling on throttle grip rubber (6.2.7 (a) (ii)) | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Rear Motorcycle structure is fractured and structural rigidity is significantly reduced spindal adjuster block. (6.1.1 (a) (i)) | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Exhaust is leaking and excessively noisey end can link pipes |7.1.1b| | 1 |
| Central Front Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Outer Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Front Brake lining(s) less than 1.0 mm thick BOTH NEARSIDE AND OFFSIDE (1.1.13 (a)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp Direction indicator (4.2.3 (b)) | 1 |
| Stop lamp adversely affected by the operation of another lamp Direction indicator (4.3.3 (b)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Headlamp light source and lamp not compatible wrong bulb (4.1.4 (c)) | 1 |