| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 44 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 13 |
| Horn not working |1.7.3a| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Drive chain excessively tight |6.2.1d| | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Registration plate issues | 6 |
| Registration plate lamp issues | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 2 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Floor brake test indicates a binding brake ** could be front wheel spacing ** |3.3.C2c| | 2 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Central Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Horn sound not in accordance with requirements not loud enough (7.7 (c)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Rear Footrest missing seized in up position (6.2.12 (a)) | 1 |
| Front Brake grabbing severely master cylinder piston needs lube (1.2.1 (c)) | 1 |
| Rear Upper Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Brake pedal insecure securing device missing (1.1.2 (e) (i)) | 1 |
| Offside Front Upper Throttle operating incorrectly throttle sticking on right hand lock / revs increasing on right turn - adjusted to correct. (6.2.7 (a) (i)) | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake lever excessively corroded (1.1.15 (b)) | 1 |
| Decelerometer brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front shock absorber seal failed and leaking oil r/hand |2.3.3| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Offside Front Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Handlebar retaining device loose |2.2.1 |b| |i|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies adjusted spring tension |1.3.1a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies front brake switch intermitent |1.3.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies lever |front brake| |1.3.1a| | 1 |
| Throttle operating incorrectly STICKING |6.2.7 |a| |i|| | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Shock absorber has a serious fluid leak BOTH (5.3.2 (b)) | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Central Rear Stop lamp not working both (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Steering operation impeded by a fairing N/S Mirror (2.1.4 (e)) | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Handlebar restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Stop lamp does not illuminate immediately a brake applies control 1 |1.3.1a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Rear Exhaust system insecure silencer loose (6.1.2 (a)) | 1 |
| Rear Exhaust system insecure exhaust silencer not secure. (6.1.2 (a)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies Front brake light switch |1.3.1a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 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 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Wheel bearing play so excessive it is likely to break up REAR WHEEL BEARINGS WORN WITH EXCESSIVE PLAY EVIDENT. (5.1.3 (a) (ii)) | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies brake lever wires diconnected |1.3.1a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 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 xenon bulb fitted |4.1.4 |c|| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Offside Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies Adjusted at test station. |1.3.1a| | 1 |
| Lower Shock absorber insecurely attached bolt loose (5.3.2 (a) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle sticks on left & right lock (6.2.7 (a) (ii)) | 1 |
| Nearside Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Steering movement excessively `notchy` with the wheel raised ** need replacing ** |2.2.1b| | 1 |
| Steering headbearing has excessive free play ** need replacing ** |2.2.2| | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Rear Wheel hub excessively worn rear wheel bearing has excessive play/wear. (5.2.1 (b) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Nearside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |