| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 56 |
| Registration plate lamp issues | 53 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 12 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 10 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 8 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 8 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 7 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 7 |
| Registration plate issues | 5 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Horn not working |7.7 |a| |ii|| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 4 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 4 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 4 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 4 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 3 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Brake grabbing severely (1.2.1 (c)) | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Front Position lamp showing red light to the front (4.2.3 (a) (ii)) | 2 |
| Offside Front Position lamp showing red light to the front (4.2.3 (a) (ii)) | 2 |
| Rear Brake fluid contaminated (1.8 (a)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear Footrest missing both (6.2.12 (a)) | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Direction indicator incorrect colour Supplementary rear indicators flashing white (4.4.3 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar Nearside grip spins on handlebar (2.2.1 (d) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect no beam image on main or dip beam. due to led bulbs being fitted. (4.1.2 (c)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle sticking (6.2.7 (a) (ii)) | 1 |
| Exhaust silencer insecure Clamp broken (8.1.1 (b) (i)) | 1 |
| Offside Front Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Central Front Headlamp aim projected beam image obviously incorrect LED Bulb fitted - Changed (4.1.2 (c)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Upper Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Upper Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Shock absorber has a serious fluid leak BOTH (5.3.2 (b)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen REPLACED BULB AND FITTED CORRECTLY (4.1.2 (a)) | 1 |
| Rear Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Throttle operating incorrectly sticking/notchy at low rpms |6.2.7 |a| |i|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Central Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Nearside Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear wheel |6.2.1h| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Throttle operating incorrectly Throttle grip wont close, bike will rev until operator close the gas. Not safe. (6.2.7 (a) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort Front brake has excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Not operating on the rear brake (4.3.2 (a) (iii)) | 1 |
| Rear Suspension arm pin or bush excessively worn linkage (5.3.4 (a) (i)) | 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 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Central Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Central Front Horn not working (7.7 (a)) | 1 |
| Nearside Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Throttle operating incorrectly |Throttle Sticking| |6.2.1f| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls Rear brake switch is not working (4.3.2 (a) (iii)) | 1 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak left side fork leg (5.3.2 (b)) | 1 |
| Offside Front Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing central position |2.2.1a| | 1 |
| Rear Brake lever pivot excessively tight (1.1.1 (a)) | 1 |
| Engine mounting/bracket missing bolts missing (6.1.8 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake caliper inadequately mounted (1.1.16 (c) (i)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Direction indicator not working Right Side indicator inactive. Now repaired (4.4.1 (a) (ii)) | 1 |
| Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Central Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Fork yoke insecure Top yoke nut loose (2.2.2 (d) (i)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Nearside Rear All position lamps not working (4.2.1 (a)) | 1 |
| Handlebar grip insecure to handlebar l/h grip needs glueing (2.2.1 (d) (ii)) | 1 |
| Front Steering headbearing excessively stiff or notchy may ajust (2.2.2 (f) (i)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Stop lamp not working Brake control 2 (4.3.1 (a) (ii)) | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Rear Brake excessively binding Roller brake tester indicates an excessively binding rear brake |1.2.1 |f|| | 1 |
| Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Nearside Front Upper Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Drive chain excessively tight seized (6.1.7 (k) (i)) | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Brake component is excessively corroded caliper binding on disc |3.1.5| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Shock absorber has a serious fluid leak front left side (5.3.2 (b)) | 1 |
| Offside Rear Wheel spindle locking device ineffective rear axle shaft tightened (5.2.1 (d)) | 1 |
| Rear Drive chain horseshoe locking device likely to become detached DRIVE CHAIN LINK NOT RIVETED AT ALL (6.1.7 (j) (ii)) | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake caliper has no reserve travel and braking performance affected (1.1.16 (e) (ii)) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |