| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 19 |
| Registration plate lamp issues | 9 |
| Rear parking brake recording little or no effort | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Parking brake: efficiency below requirements (3.7.B.7) | 6 |
| Registration plate issues | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Position lamp switch missing |1.1.A.1| | 3 |
| Nearside Rear reflector missing |1.5.1a| | 3 |
| Offside Rear reflector missing |1.5.1a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 2 |
| Parking brake efficiency below requirements |3.7.C.1b| | 2 |
| Rear reflector missing |1.5.1a| | 2 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 2 |
| Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.C.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. (3.3.A2b) | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Hazard warning switch faulty |1.4.B.1d| | 1 |
| Rear Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Battery insecure and likely to cause a short circuit (4.13 (a) (ii)) | 1 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 1 |
| Headlamp has a product on the lens so that the light output is severely reduced BOTH (4.1.4 (b)) | 1 |
| Rear fog lamp not working |1.3.2b| | 1 |
| Nearside Front Lower Ball joint has excessive play |2.2.B.1f| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |9.2.1a| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Parking brake efficiency below requirements (3.7.B.7) | 1 |
| Horn emits two or more alternating tones (1.6.2d) | 1 |
| All position lamps not working (1.1.A.3b) | 1 |
| Position lamp switch missing (1.1.A.1) | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Stop lamp not working (1.2.1b) | 1 |
| Front Steering damper ineffective (9.2.3b) | 1 |
| Front wheel bearings have excessive free play (9.2.8c) | 1 |
| Brake pedal has insufficient reserve movement (3.3.A.5) | 1 |
| Offside Upper Rear position lamp(s) incorrect colour (1.1.A.3e) | 1 |
| Offside Rear wheel bearing rough when rotated (2.6.1) | 1 |
| Nearside Rear wheel bearing has excessive play (2.6.2) | 1 |
| Nearside Rear wheel bearing rough when rotated (2.6.1) | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Rear wheel bearing has excessive play |2.6.2| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Rear Brake pedal spongy |3.3.B.1b| | 1 |
| Rear Brake pipe inadequately clipped |3.6.B.1| | 1 |
| Rear Suspension arm cracked |2.4.G.1| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Headlamp aim not tested |1.6| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp not working front switch (4.3.1 (a) (ii)) | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front position lamp|s| not working with ignition off |1.1.A.3b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| All position lamps not working |1.1.A.3b| | 1 |
| Front Front position lamp|s| not working |1.1.A.3b| | 1 |
| Front Headlamp not working on dipped beam |1.7.5a| | 1 |
| Nearside Exhaust system not adequately supported |7.1.1| | 1 |
| Offside Exhaust system not adequately supported |7.1.1| | 1 |
| All position lamps not in good working order |function impaired| |1.1.A.2a| | 1 |
| Front Fluid suspension has no suspension movement |2.4.D.5| | 1 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 1 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Offside Rear Stop lamp not working |1.2.1b| | 1 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock |2.1.4 |a|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |