| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Rear Position lamp not working (4.2.1 (a)) | 9 |
| Rear reflector missing (4.8.2 (a) (ii)) | 9 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 8 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 7 |
| Rear reflector missing |4.8.2 |a| |ii|| | 7 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 6 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 6 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 5 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 4 |
| Front Position lamp not working (4.2.1 (a)) | 4 |
| Rear Footrest missing (6.2.12 (a)) | 3 |
| 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|| | 3 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 3 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Rear Position lamp not working |4.2.1 |a|| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Registration plate issues | 3 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Exhaust system insecure (6.1.2 (a)) | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| All position lamps not working (4.2.1 (a)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Registration plate lamp issues | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Fuel tank insecure (6.1.3 (a) (i)) | 2 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Suspension component pin or bush excessively worn SWING ARM (5.3.4 (a) (i)) | 1 |
| Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Wheel damaged or distorted to the extent that control of the motorcycle is likely to be adversely affected |5.2.2 |c| |ii|| | 1 |
| Headlamp light source and lamp not compatible beam kick up to offside |4.1.4 |c|| | 1 |
| Rear Wheel fixing loose |multiple fixings| rear wheel spindle loose |5.2.1 |a| |i|| | 1 |
| Front Brake lever insecure ball end missing leaving sharp edge (1.1.2 (e) (i)) | 1 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Chain guard insecure |6.1.7 |i|| | 1 |
| Wheel more than one fixing loose lock nut missing |5.2.1 |a| |ii|| | 1 |
| Wheel more than one fixing missing lock nut missing adjuster |5.2.1 |a| |ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Central Rear Rear reflector defective or damaged by more than 50% of the reflecting surface |4.8.1 |a| |ii|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Position lamp showing white light to the rear |4.2.3 |a| |ii|| | 1 |
| Central Rear Upper Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Upper Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Lower Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies foot brake |1.3.1a| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Rear Brake rod insecure (1.1.15 (c)) | 1 |
| Rear Drive chain sprocket excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Steering headbearing excessively stiff or notchy head bearings are notchy (2.2.2 (f) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen no pattern (4.1.2 (a)) | 1 |
| Rear Brake lining(s) missing (1.1.13 (c)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Rear Footrest missing pillion footrest |6.2.12 |a|| | 1 |
| Wheel alignment incorrect which adversely affects the handling adj to left required |2.4 |a|| | 1 |
| Drive chain so worn it is likely to fail adjusted too tight |6.1.7 |c| |ii|| | 1 |
| Handlebar restricted in free movement from lock to lock clutch cable fouls between lock stops on frame |2.1.4 |c|| | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Wheel bearing rough when rotated roughness in rear wheel bearings apparent and wear is showing (5.1.3 (b) (i)) | 1 |
| Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Brake lagging in operation (1.2.1 (d)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Forks excessively deformed bent |2.2.2 |d| |i|| | 1 |
| Fork yoke excessively deformed misaligned |2.2.2 |d| |i|| | 1 |
| Wheel has bolts/rivets missing or loose to the extent that control of the motorcycle is likely to be adversely affected spindle nut loose |5.2.2 |e| |ii|| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Central Rear Lower Rear reflector reflecting white to the rear (4.8.2 (a) (ii)) | 1 |
| Central Front Lower Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Central Rear Stop lamp does not emit a steady light front brake lever switch, required adjustment |1.3.1b| | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect LED bulb fitted (4.1.2 (c)) | 1 |
| Rear Stop lamp not working rear brake control (4.3.1 (a) (ii)) | 1 |
| Rear Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Rear Position lamp not working sidelight |4.2.1 |a|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Stop lamp not working On Front Brake Lever |4.3.1 |a| |ii|| | 1 |
| Handlebar grip insecure to handlebar Both |2.2.1 |d| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen kick up to offside (4.1.2 (a)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected Throttle cable damaged/frayed. (6.2.7 (a) (ii)) | 1 |
| Throttle operating incorrectly Cable damaged/tube damaged (6.2.7 (a) (i)) | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 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 |
| Front Brake component inadequately mounted Securing clamp cracked. (1.1.21 (c)) | 1 |
| Front Brake component inadequately mounted Brake arm safety/securing split pin missing (1.1.21 (c)) | 1 |
| Rear Brake component inadequately mounted Brake arm safety/securing split pin missing (1.1.21 (c)) | 1 |
| Central Front Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Central Front Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Nearside Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies Rear pedal |1.3.1a| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Stop lamp not working Brake light not working when front brake lever is pulled (4.3.1 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake lever |1.3.1a| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies Rear brake applied |1.3.1a| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front Position lamp missing (4.2.1 (a)) | 1 |
| Stop lamp not working when using rear brake (4.3.1 (a) (ii)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Brake clevis joint insecure split pin missing rear of reaction bracket (1.1.15 (c)) | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Brake pivot excessively worn brake lever pivot |1.1.15 |b|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Handlebar deformed to the extent that steering is affected |2.2.1 |c| |ii|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Suspension arm pin or bush excessively worn Excess free play in swingarm (5.3.4 (a) (i)) | 1 |
| Nearside Footrest insecure bracket cracked (6.2.12 (a)) | 1 |
| Central Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Position lamp likely to become detached (4.2.1 (c) (ii)) | 1 |
| Rear Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working from rear brake (4.3.1 (a) (ii)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |wiring for heated grips| |2.1.2a| | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Footrest missing Both rear foot pegs missing |6.2.12 |a|| | 1 |