| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 36 |
| Brakes imbalanced across an axle | 15 |
| Parking brake: efficiency below requirements |3.7.B.7| | 10 |
| Horn not working |1.6.2a| | 9 |
| Nearside Stop lamp not working |1.2.1b| | 9 |
| Exhaust emissions carbon monoxide content excessive |7.3.B.1a| | 9 |
| Nearside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering |2.5.A.3a| | 7 |
| Offside Stop lamp not working |1.2.1b| | 7 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 7 |
| Offside Front Axle king pin has excessive play in pin and/or bush adversely affecting the steering |2.5.A.3a| | 6 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 6 |
| Windscreen wiper does not clear the windscreen effectively | 6 |
| Registration plate lamp issues | 5 |
| Nearside Headlamp aim beam image kick up to the offside |1.8| | 4 |
| Offside Headlamp aim beam image kick up to the offside |1.8| | 4 |
| Service brake: efficiency below requirements |3.7.B.7| | 4 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 4 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 4 |
| Nearside Front Direction indicator not working |1.4.A.2c| | 4 |
| Rear brake binding | 3 |
| Rear parking brake recording little or no effort | 3 |
| Exhaust emissions hydrocarbon content excessive |7.3.B.1b| | 3 |
| Registration plate issues | 3 |
| Offside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 3 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 3 |
| Nearside front parking brake recording little or no effort |3.7.B.6a| | 3 |
| Main beam `tell-tale` not working |1.7.4c| | 2 |
| Nearside Front Suspension arm has excessive play in a pin/bearing |2.4.G.2| | 2 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 2 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 2 |
| Brake performance not tested |3.7.A.1| | 2 |
| Nearside Headlamp insecure |1.7.3| | 2 |
| Driver`s seat insecure |6.2.A.1| | 2 |
| Nearside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 2 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 2 |
| Offside Front constant velocity joint gaiter split |2.5.C.1a| | 2 |
| Offside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 2 |
| Stop lamp not working |1.2.1b| | 2 |
| Nearside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 2 |
| Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 2 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 2 |
| Nearside front brake binding |3.7.B.1| | 2 |
| Nearside Axle king pin has excessive play in pin and/or bush adversely affecting the steering |2.5.A.3a| | 2 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 2 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 2 |
| Offside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 2 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 2 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 2 |
| Offside Axle king pin has excessive play in pin and/or bush adversely affecting the steering |2.5.A.3a| | 2 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 2 |
| Nearside Front Shock absorbers has a serious fluid leak | 2 |
| Nearside Front Inner Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 1 |
| Nearside Front Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 1 |
| Offside Front Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 1 |
| Nearside Track rod end ball joint dust cover missing |2.2.C.1c| | 1 |
| Offside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c| | 1 |
| Nearside Front Fuel hose insecure |7.2.1| | 1 |
| Offside Front Direction indicators incorrect colour |1.4.A.2f| | 1 |
| rear brake excessively fluctuating |3.7.B.3| | 1 |
| Windscreen washer not working | 1 |
| Offside Seat belt retracting mechanism defective |7.1.2 |e|| | 1 |
| Nearside Front Statutory seat belt missing |5.1.1| | 1 |
| Offside Front Statutory seat belt missing |5.1.1| | 1 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 1 |
| Fuel hose leaking |7.2.3| | 1 |
| Front Headlamp aim beam image obviously incorrect both sides |1.8.A.1b| | 1 |
| Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings front both sides |6.1.B.2| | 1 |
| Fuel cap/sealing device sealing washer missing |7.2.4c| | 1 |
| Nearside Headlamp not working on main beam |1.7.5a| | 1 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 1 |
| Nearside Front Fuel system component leaking |7.2.3| | 1 |
| Nearside Front front parking brake recording little or no effort |3.7.B.6a| | 1 |
| Emissions not tested engine will not idle |8.2.1.2 |d|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Offside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 1 |
| Indicator switch faulty |1.4.A.1| | 1 |
| Offside Track rod end ball pin shank loose |2.2.B.1c| | 1 |
| Offside Front wheel bearing rough when rotated |2.5.A.2| | 1 |
| Nearside Front Lower Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 1 |
| Offside Front Lower Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 1 |
| Offside Front Lower Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Offside Rear Lower Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Nearside Rear Lower Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Nearside Outer Front constant velocity joint gaiter split |2.5.C.1a| | 1 |
| Nearside Track rod end ball joint has excessive play |2.1.3 |b| |i|| | 1 |
| Rear Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.B.7| | 1 |
| Parking brake mechanism/associated mounting prescribed area is excessively corroded |3.1.9| | 1 |
| Nearside Front passenger door cannot be opened from outside the vehicle |6.2.B.1b| | 1 |
| Shock absorber has an excessively worn bush |2.7.4| | 1 |
| Nearside Front constant velocity joint gaiter missing |2.5.C.1a| | 1 |
| Braking system leaking |3.6.A.1| | 1 |
| Offside Headlamp insecure |1.7.3| | 1 |
| Nearside Front Suspension arm has excessive play in a pin/bush |2.4.G.2| | 1 |
| Nearside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 1 |
| Steering locking device missing |2.2.C.1g| | 1 |
| Offside Rear Body insecure and dangerous to other road users |6.1.B.1b| | 1 |
| front parking |secondary| brakes imbalanced |3.7.B.6b| | 1 |
| Nearside front brake recording little or no effort |3.7.B.5a| | 1 |
| Passenger`s seat insecure |6.2.A.1| | 1 |
| Nearside Rear position lamp|s| incorrect colour |1.1.A.3e| | 1 |
| Offside Rear position lamp|s| incorrect colour |1.1.A.3e| | 1 |
| Nearside Stop lamp emits other than a steady red light |1.2.1e| | 1 |
| Offside Stop lamp emits other than a steady red light |1.2.1e| | 1 |
| Emissions not tested |7.0| | 1 |
| Windscreen washer control missing |8.2.1a| | 1 |
| Nearside Outer Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Offside Outer Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Nearside Body has a sharp edge caused by corrosion |6.1.C.1| | 1 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 1 |
| Windscreen wiper not operating automatically when switched on |8.2.1b| | 1 |
| Offside Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 1 |
| Offside Direction indicator adversely affected by the operation of another lamp |1.4.A.2h| | 1 |
| Nearside Rear Direction indicators not working |1.4.A.2c| | 1 |
| Rear Mechanical brake component has restricted free movement | 1 |
| Nearside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Offside Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Front Direction indicator not working |1.4.A.2c| | 1 |
| Nearside Front Hazard warning lamps inoperative |1.4.B.1b| | 1 |
| Offside Front Hazard warning lamps inoperative |1.4.B.1b| | 1 |
| Headlamp aim beam image kick up to the offside 2x |1.8| | 1 |
| Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Nearside Rear Suspension has inadequate clearance with the bump stop |2.4.A.1a| | 1 |
| Nearside Shock absorber casing corroded externally so the unit does not function |2.7.2a| | 1 |
| Nearside Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 1 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 1 |
| Nearside Front Headlamp not working on main beam |1.7.5a| | 1 |
| Offside Front Headlamp not working on main beam |1.7.5a| | 1 |
| Offside Front Headlamp not in a clean condition affecting beam image |1.2.4a| | 1 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 1 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 1 |
| Nearside Rear Front position lamp|s| not working |1.1.A.3b| | 1 |
| Offside Rear Front position lamp|s| not working |1.1.A.3b| | 1 |
| Front Headlamp insecure |1.7.3| | 1 |
| Nearside Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 1 |
| Nearside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 1 |
| Nearside Rear Direction indicators adversely affected by the operation of another lamp |1.4.A.2h| | 1 |
| Nearside Obligatory mirror missing |8.1.1| | 1 |
| Nearside Front wheel bearing rough when rotated |2.5.A.2| | 1 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 1 |
| Offside Rear Shock absorber has an excessively worn bush |2.7.4| | 1 |
| Nearside Rear Shock absorber has an excessively worn bush |2.7.4| | 1 |
| Fuel tank leaking |7.2.3| | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Steering column shaft has excessive end float |2.1.3| | 1 |
| Offside Front Side repeater not working |1.4.A.2c| | 1 |
| Nearside Front Front passenger door cannot be opened from outside the vehicle |6.2.B.1b| | 1 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 1 |
| Offside Front Front wheel bearing has excessive play |2.5.A.3c| | 1 |
| Nearside Front position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 1 |
| Offside Front position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 1 |
| Nearside Passenger`s seat insecure |6.2.A.1| | 1 |
| Direction indicators not working |1.4.A.2c| | 1 |
| Nearside Front Torque/reaction arm has excessive play in a pin/bush |2.4.G.2| | 1 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Nearside Brake linkage has restricted free movement |3.5.1k| | 1 |
| Nearside Front Direction indicator missing |1.4.A.2b| | 1 |
| Offside Front Direction indicator missing |1.4.A.2b| | 1 |
| Nearside Rear reflector missing |1.5.1a| | 1 |
| Offside Rear reflector missing |1.5.1a| | 1 |
| Offside Front suspension has excessive movement at a wishbone pin or bush |2.5.A.1c| | 1 |
| Offside Front Axle king pin so loose it is likely to affect directional stability (5.1.2 (d) (ii)) | 1 |
| Bonnet primary retaining device insecure (3.1 (c)) | 1 |
| Offside Rear fog lamp not working |1.3.2b| | 1 |
| Nearside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Service brake is causing the vehicle to swerve to the nearside |3.7.C.2| | 1 |
| Battery insecure |1.9.1| | 1 |
| Front brake application uneven | 1 |
| Headlamp switch faulty |1.7.1| | 1 |
| Nearside Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Offside Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Body insecure and dangerous to other road users |6.1.B.1b| | 1 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 1 |
| Nearside Front constant velocity joint gaiter insecurely mounted to its housing |2.5.C.1a| | 1 |
| Headlamp switch insecure |1.7.1| | 1 |
| Nearside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 1 |
| Offside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 1 |
| Offside Headlamp not working on main beam |1.7.5a| | 1 |
| Front passenger door cannot be opened from outside the vehicle |6.2.B.1b| | 1 |
| Nearside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c| | 1 |
| Nearside Outer Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 1 |
| Windscreen wiper not working (3.4 (a)) | 1 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Outer Track rod end ball joint has excessive play |2.2.B.1f| | 1 |
| Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f| | 1 |
| Nearside Headlamp adversely affected by the operation of another lamp |1.7.5c| | 1 |
| Offside Headlamp adversely affected by the operation of another lamp |1.7.5c| | 1 |
| Nearside Headlamp does not operate immediately when selected on main beam |1.7.4a| | 1 |
| Offside Headlamp does not operate immediately when selected on dipped beam |1.7.4a| | 1 |
| Steering wheel locking device insecure |2.1.6| | 1 |
| Rear Stop lamp(s) all not working (4.3.1 (a) (iii)) | 1 |
| Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 1 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 1 |
| Offside Front Direction indicator not working |1.4.A.2c| | 1 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 1 |
| Offside Position lamp not working (4.2.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b)) | 1 |
| Exhaust emissions hydrocarbon content excessive (8.2.1.2 (b)) | 1 |
| Nearside Front Integral body structure or chassis has excessive corrosion, seriously affecting its strength within 30cm of a body mounting (6.2.2 (d) (i)) | 1 |
| Offside Rear Integral body structure or chassis has excessive corrosion, seriously affecting its strength within 30cm of a body mounting (6.2.2 (d) (i)) | 1 |
| Offside Front Axle king pin is loose in the axle beam (5.1.2 (d) (i)) | 1 |
| Drivers seat fore and aft adjustment mechanism not functioning as intended. (6.2.5 (b) (i)) | 1 |
| Passengers seat with a defective structure (6.2.6 (a) (i)) | 1 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 1 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 1 |
| Front position lamp|s| not working |1.1.A.3b| | 1 |
| Headlamp not working on main beam |1.7.5a| | 1 |
| Offside Rear Brake pipe leaking |3.6.A.1| | 1 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 1 |