| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 26 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Registration plate issues | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Horn not working |1.7.3a| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Brake component leaking fluid |3.2.B4| | 2 |
| 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 Brake caliper has no reserve travel and braking performance affected (1.1.16 (e) (ii)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear position lamp does not face the rear |1.1.1d| | 1 |
| Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 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 |
| Fuel tank insecure |6.1.3 |a| |i|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Footrest missing |6.2.1a| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Offside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Lower Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Centre Rear Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Exhaust mounting missing |7.1.1c| | 1 |
| Offside Exhaust mounting missing |7.1.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Lower Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Registration plate lamp issues | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Horn control defective |1.7.2a| | 1 |