| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Brakes imbalanced across an axle | 8 |
| Service brake: efficiency below requirements |3.7.B.7| | 7 |
| Windscreen wiper does not clear the windscreen effectively | 7 |
| Registration plate lamp issues | 6 |
| Horn not working |1.6.2a| | 6 |
| Offside Stop lamp not working |1.2.1b| | 6 |
| Nearside Stop lamp not working |1.2.1b| | 5 |
| Parking brake: efficiency below requirements |3.7.B.7| | 4 |
| Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 4 |
| Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 3 |
| All position lamps not working |1.1.A.3b| | 3 |
| Rear brake binding | 3 |
| Nearside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 3 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 2 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 2 |
| Registration plate issues | 2 |
| Offside Rear Braking system leaking |3.6.A.1| | 2 |
| Rear parking brake recording little or no effort | 2 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 2 |
| Steering system has excessive free play detected at the steering wheel |steering box fitted| |2.2.A.1a| | 2 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 2 |
| Indicator switch faulty |1.4.A.1| | 2 |
| Rear Exhaust system not adequately supported |7.1.1| | 2 |
| Offside Body has a sharp edge caused by corrosion |6.1.C.1| | 2 |
| Nearside Front Steering locking device missing |2.2.C.1g| | 1 |
| Offside Front Steering locking device missing |2.2.C.1g| | 1 |
| Nearside Front Body or chassis has an inadequate repair, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Offside Front Body or chassis has an inadequate repair, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.A.3f| | 1 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 1 |
| Nearside Rear Wheel nut|s| loose |4.2.A.1e| | 1 |
| Offside Rear Wheel nut|s| loose |4.2.A.1e| | 1 |
| Nearside Steering pivot point has excessive play |2.2.B.1g| | 1 |
| Rear Mechanical brake component has restricted free movement | 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 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 |
| Nearside Rear reflector missing |1.5.1a| | 1 |
| Offside Rear reflector missing |1.5.1a| | 1 |
| Nearside Rear Wheel insecure |4.2.A.1c| | 1 |
| Offside Rear Wheel insecure |4.2.A.1c| | 1 |
| Offside Front Wheel insecure |4.2.A.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.4.A.2b| | 1 |
| Exhaust system not adequately supported |7.1.1| | 1 |
| Nearside Rear Leaf spring saddle is moving relative to the spring |2.4.B.7a| | 1 |
| Offside Rear Leaf spring saddle is moving relative to the spring |2.4.B.7a| | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Parking brake mechanism/associated mounting prescribed area is fractured |3.1.9| | 1 |
| Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Battery insecure |1.9.1| | 1 |
| Nearside Rear Braking system leaking |3.6.A.1| | 1 |
| Nearside Lower Front suspension has excessive movement at a wishbone pin or bush |2.5.A.1c| | 1 |
| Brake pedal anti-slip provision missing |3.3.A.1b| | 1 |
| Nearside Inner Steering arm has relative movement at its fixings |2.2.B.1h| | 1 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 1 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 1 |
| Offside front brake binding |3.7.B.1| | 1 |
| Nearside Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Service brake is causing the vehicle to swerve to the nearside (1.2.1 (b) (i)) | 1 |
| Parking brake lever, pawl mechanism pivot|s| or their associated mountings locking device insecure |3.1.4b| | 1 |
| Front brake application uneven | 1 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 1 |
| Parking brake lever defective so that it cannot be satisfactorily operated |3.1.3c| | 1 |
| Hazard warning switch missing |1.4.B.1d| | 1 |
| Nearside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings 2 places |6.1.B.2| | 1 |
| Nearside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Central Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings front crossmember |6.1.B.2| | 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 |
| Service brake grabbing severely |3.7.C.2| | 1 |
| Service brake is causing the vehicle to swerve to the nearside |3.7.C.2| | 1 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 1 |
| Nearside Inner Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Nearside Suspension arm corroded and seriously weakened |2.4.G.1| | 1 |
| Nearside Axle king pin has excessive play in pin and/or bush adversely affecting the steering |2.5.A.3a| | 1 |
| Rear Leaf spring has a deteriorated shackle pin rubber bush resulting in excessive movement |2.4.B.2| | 1 |
| Brake master cylinder/servo mounting prescribed area is excessively corroded |3.6.C.3| | 1 |
| Fuel system component insecure |7.2.1| | 1 |
| rear brake recording little or no effort |3.7.B.5a| | 1 |
| Offside Direction indicator excessively damaged so that it is not visible from a reasonable distance |1.4.A.2e| | 1 |
| Nearside Front coil spring worn so that its cross sectional area is reduced and seriously weakened |2.4.C.1b| | 1 |
| Nearside Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 1 |
| Nearside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Axle beam cracked |2.5.A.5a| | 1 |
| Offside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 1 |
| Nearside Front Steering component mounting prescribed area is excessively corroded |2.2.C.1h| | 1 |
| Brake pipe excessively corroded | 1 |
| Brake pedal actuating linkage excessively damaged and seriously weakened |3.3.A.1g| | 1 |
| Nearside Steering box has relative movement between sector shaft and the drop arm |2.2.B.1b| | 1 |
| Nearside Body has a sharp edge caused by corrosion |6.1.C.1| | 1 |
| Brake pedal does not operate a brake fitted to each wheel |3.3.A.3| | 1 |
| Nearside Indicator tell tale inoperative |1.4.A.2a| | 1 |
| Front Headlamp not working on dipped beam |1.7.5a| | 1 |
| Front Headlamp not working on main beam |1.7.5a| | 1 |
| Nearside Tie bar/rod rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 1 |
| Front Trikes, quads or pre-68 vehicles, service brake imbalanced across an axle |3.7.B.5b| | 1 |
| Offside Rear Stop lamp not working |1.2.1b| | 1 |
| Nearside Rear Leaf spring has excessive wear in a shackle pin and/or bush |2.4.B.2| | 1 |
| Nearside Front constant velocity joint gaiter insecurely mounted to its housing |2.5.C.1a| | 1 |
| Offside Front Shock absorber has negligible damping effect |2.7.5| | 1 |
| Headlamp aim beam image kick up to the offside |1.8| | 1 |
| Nearside Rear Brake pipe inadequately clipped |3.6.B.1| | 1 |
| Brake pipe inadequately clipped |3.6.B.1| | 1 |
| Sub-frame attachment bracket/mounting corroded and its strength is seriously reduced |2.4.G.1| | 1 |
| Nearside Windscreen wiper not operating automatically when switched on |8.2.1b| | 1 |
| Offside Windscreen wiper not operating automatically when switched on |8.2.1b| | 1 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Nearside Rear Anti-roll bar attachment bracket/mounting insecure |2.4.G.1| | 1 |
| Nearside Front Braking system leaking |3.6.A.1| | 1 |
| Nearside Front Track rod end loose |2.2.B.1d| | 1 |
| Offside Front Headlamp excessively damaged so that the light output is severely reduced |1.7.5a| | 1 |
| Offside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Nearside Front Lower Ball joint has excessive play |2.2.B.1f| | 1 |
| Nearside Front Side repeater not working |1.4.A.2c| | 1 |
| Offside Front Brake hose leaking |3.6.A.1| | 1 |
| Centre Rear Brake hose leaking |3.6.A.1| | 1 |
| Indicator tell tale inoperative |1.4.A.2a| | 1 |
| Nearside Steering locking device missing |2.2.C.1g| | 1 |
| Steering box insecure |2.2.B.1a| | 1 |
| Offside Seat belt anchorage prescribed area is inadequately repaired |5.2.6| | 1 |
| Nearside Seat belt anchorage prescribed area is inadequately repaired |5.2.6| | 1 |
| Offside Front Steering rack gaiter split |2.2.D.2d| | 1 |
| Offside Front constant velocity joint gaiter split |2.5.C.1a| | 1 |
| Steering column movement between the shaft and steering wheel |2.1.2b| | 1 |
| Steering rack insecure |2.2.B.1a| | 1 |
| Offside Front Suspension component mounting prescribed area is inadequately repaired |2.4.A.3| | 1 |
| rear brakes release unevenly |3.7.B.4| | 1 |
| Windscreen wiper not operating automatically when switched on |8.2.1b| | 1 |
| Nearside Rear Leaf spring slipper cracked |2.4.B.5| | 1 |
| Nearside Rear Leaf spring slipper excessively worn |2.4.B.5| | 1 |
| Parking brake lever defective so that it cannot be satisfactorily operated not returning to off position without manually pushing it off |3.1.3c| | 1 |