| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 27 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 21 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 20 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 19 |
| Front Brake excessively binding (1.2.1 (f)) | 16 |
| Stop lamp remains on when the brakes are released | 13 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 12 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 11 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 10 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 10 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 10 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 8 |
| Rear Brake excessively binding (1.2.1 (f)) | 6 |
| Headlamp aim not tested (4.1.2 (b)) | 6 |
| Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 6 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 6 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 5 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 5 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 4 |
| Registration plate issues | 4 |
| Registration plate lamp issues | 4 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 4 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Brake performance not tested (1.2.1 (g)) | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Nearside Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake grabbing severely (1.2.1 (c)) | 2 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Nearside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Front Headlamp aim not tested (4.1.2 (b)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Shock absorber has a serious fluid leak Both fork seals leaking (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak Fork seal (5.3.2 (b)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Offside Rear Direction indicator likely to become detached held on with tape (4.4.1 (c) (ii)) | 1 |
| Offside Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| All direction indicators incorrect colour (4.4.3 (a)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Forks in such a condition that steering control is adversely affected bent (2.2.2 (d) (ii)) | 1 |
| Nearside Front Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Nearside Horn not working (7.7 (a) (ii)) | 1 |
| Offside Horn not working (7.7 (a) (ii)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Fork yoke insecure (2.2.2 (d) (i)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Rear Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Rear Brake cylinder has no reserve travel and braking performance affected (1.1.16 (e) (ii)) | 1 |
| Central Front Headlamp aim projected beam image obviously incorrect led bulb fitted (4.1.2 (c)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Front Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle affected by steering (6.2.7 (a) (ii)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls rear brake switch (4.3.2 (a) (iii)) | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Pillion seat with a defective supporting structure Foot Rest Seized (6.2.6 (a) (i)) | 1 |
| Offside Footrest insecure (6.2.12 (a)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure Stand (6.1.1 (b) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen Lens in wrong (4.1.2 (a)) | 1 |
| Offside Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Nearside Front Steering operation fouling on the fuel tank or bodywork on full lock lock stop missing (2.1.4 (b)) | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced Complete rear fender and seat unit of bike is insecure (6.1.1 (b) (ii)) | 1 |
| Offside Front Footrest insecure secured with cable ties (6.2.12 (a)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp CANT TELL IF REAR POSITION LIGHT IS WORKING DUE TO BRAKE LIGHT ON CONTINUOUSLY (4.2.3 (b)) | 1 |
| Front Upper Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Suspension arm attachment bracket/mounting insecure swingarm (5.3.3 (a) (i)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Stop lamp not working foot brake (4.3.1 (a) (ii)) | 1 |
| Nearside Front Upper Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Brake fluid not visible Rear brake. (1.1.10 (d) (iii)) | 1 |
| Rear Brake component modification unsafe Rear Brake hose rubbing against O/S Rear coil spring. (1.1.21 (d) (i)) | 1 |
| Stop lamp not working Front brake lever (4.3.1 (a) (ii)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Stop lamp not working foot (4.3.1 (a) (ii)) | 1 |
| Offside Steering linkage locking device missing (2.1.3 (d)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Headlamp aim projected beam image obviously incorrect LED Bulb (4.1.2 (c)) | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Central Front Upper Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect CONTINENTAL STYLE LENS, KICK UP TO THE RIGHT. (4.1.2 (c)) | 1 |
| Wheel alignment incorrect which adversely affects the handling n/s (0mm) and o/s (40mm) (2.4 (a)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Front Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Brake fluid not visible Fluid pot on the left is empty (1.1.10 (d) (iii)) | 1 |
| Rear Suspension arm pin or bush likely to become detached (5.3.4 (a) (ii)) | 1 |
| Stop lamp not working When using front brake control (4.3.1 (a) (ii)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Rear brake control (4.3.2 (a) (iii)) | 1 |
| Central Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Drive chain excessively loose Chain excess slack - Tightened (6.1.7 (c) (i)) | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Stop lamp not working no operation of brake light from front brake lever (4.3.1 (a) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Throttle operating incorrectly revs rising on l/h lock (6.2.7 (a) (i)) | 1 |
| Offside Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |