| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 42 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Registration plate issues | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Rear Brake excessively binding (1.2.1 (f)) | 6 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Horn not working |1.7.3a| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Rear Brake excessively binding |1.2.1 |f|| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Rear Plate brake test indicates a severely grabbing brake |3.3.B1b| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle sticking on (6.2.7 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.5.1) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Offside Throttle operating incorrectly Throttle Grip loose (6.2.7 (a) (i)) | 1 |
| Rear Brake caliper cracked and braking performance affected |1.1.16 |a| |ii|| | 1 |
| Rear Brake caliper cracked (1.1.16 (a) (i)) | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Engine mounting/bracket missing (6.1.8 (a) (ii)) | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp light source and lamp not compatible ns and os headlamps (4.1.4 (c)) | 1 |
| Offside Rear Lower Brake caliper damaged crack in rear caliper |1.1.16 |a| |i|| | 1 |
| Offside Headlamp aim beam image kick up to the offside bulb fitted incorectly |1.6| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Brake excessively binding (1.2.1 (f)) | 1 |
| Brake disc contaminated (1.1.14 (b)) | 1 |
| Suspension component ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Stop lamp does not illuminate immediately a brake applies front switch |1.3.1a| | 1 |
| Front Shock absorber has a serious fluid leak right hand fork leaking (5.3.2 (b)) | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride tank mounting bolt loose |6.2.1h| | 1 |
| Central Rear Upper Stop lamp not working front brake switch failed (4.3.1 (a) (ii)) | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Front Brake component leaking fluid caliper |3.2.B4| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Brake reaction bracket securing bolt|s| loose rear brake arm bolt |3.2.A1j| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Stop lamp does not illuminate immediately a brake applies Foot brake |1.3.1a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies when front brake lever pulled no illumination of brake light |1.3.1a| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Shock absorber has a serious fluid leak Both front (5.3.2 (b)) | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |