| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 46 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 13 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Horn not working |1.7.3a| | 8 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Registration plate issues | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Riders seat insecure |6.2.1a| | 4 |
| Rear Brake lever excessively corroded |3.2.A1c| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Rear Direction indicator not working |1.5.1c| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Offside Front Brake pipe union leaking fluid |3.2.B4| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Fuel system component insecure |7.2.1b| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Offside Front Brake pipe inadequately supported |3.2.B2b| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Brake pipe excessively corroded | 2 |
| Front Steering lock stop ineffective |2.1.3| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Steering headbearing has excessive free play there is a creaking sound from the front end when bounced almost certainly the head bearings |2.2.2| | 1 |
| Throttle operating incorrectly sticks open |6.2.1f| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Fuel pipe leaking |7.2.1a| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Centre Front Upper An item not tested |Manual| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Inner Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Lower Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Central Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Handlebar restricted in free movement from lock to lock wiring loom trapped |2.1.4 |c|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected tight |2.2.2 |f| |ii|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected notchy with front wheel raised |2.2.2 |f| |ii|| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake component is fractured |3.1.5| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Centre Rear Rear position lamp insecure |1.1.1c| | 1 |
| Centre Front Horn is not a constant note |1.7.3c| | 1 |
| Nearside Inner Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Centre Rear Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Inner Rear Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Outer Rear Lower Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Inner Rear Lower Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Sidecar rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Upper Front suspension assembly has an insecure fork brace |2.3.4d| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Offside Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Offside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Wheel excessively distorted |5.2.2 |c| |i|| | 1 |
| Rear position lamp adversely affected by the operation of another lamp stop light/ tail light |1.1.3b| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Offside Rear Brake lever excessively corroded |3.2.A1c| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Nearside Front Upper Front suspension assembly component loose |2.3.1| | 1 |
| Offside Front Upper Front suspension assembly component loose |2.3.1| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Front Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Fuel system component insecure Fuel tank |7.2.1b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Throttle operating incorrectly Not returning by spring. |6.2.1f| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Engine mounting/bracket missing |6.1.8 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen LHD LAMP FITTED |4.1.2 |a|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies rear foot brake light not working |1.3.1a| | 1 |
| Registration plate lamp issues | 1 |
| Offside Fuel system component leaking excessively or a risk of fire Carburettor (6.1.3 (b) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Throttle operating incorrectly Sticking/binding at twist Grip (6.2.7 (a) (i)) | 1 |
| Front Exhaust has a major leak of exhaust gases balance pipe (6.1.2 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Fuel hose leaking excessively or a risk of fire last piece of hose to carb that isnt braided is leaking (6.1.3 (b) (ii)) | 1 |
| Rear reflector missing Replaced (4.8.2 (a) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Headlamp incorrect colour (1.2.1) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort (3.3.A1d) | 1 |
| Front Steering movement excessively notchy with the weight on the lower bearing (2.2.1a) | 1 |
| Nearside Front Front suspension assembly component loose (2.3.1) | 1 |
| Steering headbearing has excessive wear or free play top yoke nut was loose (2.2.2 (f) (i)) | 1 |
| Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Offside Rear Lower Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Fuel cap ineffective sealing ring missing (6.1.3 (b) (i)) | 1 |
| Rear All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |