| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Horn not working |1.7.3a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 5 |
| Registration plate issues | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear Position lamp not working |4.2.1 |a|| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 3 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 3 |
| Rear Brake locking device missing |3.2.A1e| | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Stop lamp affected by the operation of another lamp rear tail lamp |1.3.2| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Fuel pipe union leaking |7.2.1a| | 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 Wheel bearing has excessive play |5.1.3 |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 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Offside Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Nearside Front Lower Brake hose leaking fluid |3.2.B4| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake drum|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Steering headbearing has excessive free play Excessive notching left to right lock |2.2.2| | 1 |
| Front Roller brake test indicates a severely grabbing brake excessive |3.3.A1b| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering headbearing has excessive free play locking nut insecure |2.2.2| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Footrest missing and offside unable to secure incorrect postion |6.2.1a| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Direction indicators flashing more than 120 times per minute both |1.5.1c| | 1 |
| Rear Brake reaction bracket insecure split pin missing |3.2.A1j| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen not bright enough |1.6.B.1| | 1 |
| Central Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front suspension assembly component missing front mud guard missing , removing bracing of forks |2.3.1| | 1 |
| Direction indicators affected by the operation of another lamp indicators must go on and off not dim and bright |1.5.1c| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen no patten at all |1.6.B.1| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded front disc fouling caliper when rotated |3.2.A1h| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear suspension bush has excessive free play Swing arm bolts loose |2.4.A2a|i|| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort lever spongy and effort poor |3.3.A1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies wires also broken off lever |1.3.1a| | 1 |
| Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Clutch lever |6.2.1h| | 1 |
| Front Wheel spoke excessively bent |4.2.1b| | 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 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak excessive fluid leak |5.3.2 |b|| | 1 |
| Central Rear Upper Position lamp not working rear position lamp inoperative |4.2.1 |a|| | 1 |
| Front Horn control defective |1.7.2a| | 1 |
| Front shock absorber seal failed and leaking oil both |2.3.3| | 1 |
| Rear suspension bush has excessive free play swinging arm |2.4.A2a|i|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Direction indicators not working All indicators |1.5.1c| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Headlamp light intensity severely reduced dip and main beam inter acting on dip position |4.1.4 |a|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Fuel tank insecure |6.1.3 |a| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear All position lamps not working |4.2.1 |a|| | 1 |
| All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Stop lamp light intensity significantly reduced |4.3.3 |a| |ii|| | 1 |
| Rear Brake caliper leaking |1.1.16 |b| |i|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Rear Brake rod insecure |1.1.15 |c|| | 1 |
| Suspension arm corroded and seriously weakened swingarm |5.3.3 |b| |i|| | 1 |
| Front Steering linkage locking device missing |2.1.3 |d|| | 1 |
| Rear Steering linkage locking device missing |2.1.3 |d|| | 1 |
| Steering linkage locking device missing Rear brake arm |2.1.3 |d|| | 1 |
| Offside Front Position lamp switch insecure |4.2.2 |b|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Front Brake fluid contaminated |1.8 |a|| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Brake pedal pivot has excessive free play |1.1.1 |b|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp adversely affected by the operation of another lamp rear light brighter than stop lamp (4.3.3 (b)) | 1 |
| Brake lever insecure front lever lock nut missing (1.1.2 (e) (i)) | 1 |
| Brake component insecure rear arm not secure DANGEROUS !!! (1.1.21 (c)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Stop lamp not working not working off front or rear brakes. (4.3.1 (a) (ii)) | 1 |
| Front Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working Earthing fault, ( repaired ) (4.4.1 (a) (ii)) | 1 |
| Roller brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure Rear tail of the bike is insecure. (6.1.1 (b) (i)) | 1 |
| Shock absorber has an excessively worn bush Excessive play in fork linkage. (5.3.2 (c)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |