| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear parking brake recording little or no effort | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Hazard warning switch missing |1.4.B.1d| | 1 |
| Registration plate lamp issues | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Offside Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Offside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Sidecar front position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front shock absorber seal failed and leaking oil offside front fork seal leaking and contaminating brake components |2.3.3| | 1 |
| Nearside Rear Brake component has restricted free movement and operation is likely to be impeded brake caliper shows signs of fire damage |3.2.A1h| | 1 |
| Nearside Rear Brake performance not tested rear brake inoperative due to loss of fluid and pad braking surface due to heat transferance |3.3| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Suspension component modified so the suspension is inoperative too much oil? |5.3.3 |c| |ii|| | 1 |
| Brake rod insecure (1.1.15 (c)) | 1 |
| An item not tested |Manual| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Footrest insecure |9.6.1| | 1 |
| Offside Front Footrest insecure |9.6.1| | 1 |
| Nearside Rear Trailing arm locating pin insecure |2.4.G.3a| | 1 |
| Nearside Front Front shock absorber leaking oil |9.2.7b| | 1 |
| Offside Front Front shock absorber leaking oil |9.2.7b| | 1 |
| Front Front suspension assembly component restricted in operation |9.2.5e| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Suspension arm pin or bush excessively worn Shock linkage to swinging arm (5.3.4 (a) (i)) | 1 |
| Offside Rear Suspension arm pin or bush excessively worn Shock linkage to swinging arm (5.3.4 (a) (i)) | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.C.1a| | 1 |
| Front position lamp|s| not working |1.1.A.3b| | 1 |
| Stop lamp not working |1.2.1b| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Centre Front Lower Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Centre Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |