| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 146 |
| Windscreen wiper does not clear the windscreen effectively | 127 |
| Brake pipe excessively corroded | 107 |
| Headlamp aim out of alignment | 100 |
| Brake hose excessively deteriorated | 84 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 60 |
| Offside Stop lamp not working |1.2.1b| | 54 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 46 |
| Registration plate issues | 42 |
| Nearside Stop lamp not working |1.2.1b| | 41 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 35 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 31 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 26 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 26 |
| Brakes imbalanced across an axle | 23 |
| Offside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 23 |
| Nearside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 22 |
| Offside Front Anti-roll bar linkage has excessive play in a pin/bush |2.4.G.2| | 22 |
| Offside Rear fog lamp not working |1.3.2b| | 21 |
| Nearside Front Upper Suspension arm has excessive play in a ball joint |2.4.G.2| | 21 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 20 |
| Nearside Rear Stop lamp not working |1.2.1b| | 19 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 18 |
| Offside Rear Stop lamp not working |1.2.1b| | 17 |
| Emissions not tested |7.0| | 16 |
| Nearside Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 15 |
| Offside Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 15 |
| Rear fog lamp not working |1.3.2b| | 14 |
| Battery insecure |1.9.1| | 13 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 12 |
| Nearside Front Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 12 |
| Parking brake: efficiency below requirements |3.7.B.7| | 12 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 11 |
| Windscreen has damage | 11 |
| Offside Front Anti-roll bar has excessive play in a pin/bush |2.4.G.2| | 11 |
| Parking brake lever has no reserve travel |3.1.6b| | 10 |
| Nearside Headlamp insecure |1.7.3| | 10 |
| Brake hose damaged | 9 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 9 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 9 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 9 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 8 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 8 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 8 |
| Rear brake binding | 8 |
| Windscreen wiper blade insecure | 8 |
| Offside Front Anti-roll bar linkage rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 8 |
| Rear parking brake recording little or no effort | 8 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 7 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 7 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 7 |
| Offside Headlamp insecure |1.7.3| | 7 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 7 |
| Horn not working |1.6.2a| | 6 |
| Nearside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 6 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 6 |
| Rear brake application uneven | 6 |
| Rear fog lamp tell tale not working |1.3.1b| | 6 |
| Front brake application uneven | 6 |
| Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 5 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 5 |
| Offside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 5 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 5 |
| Nearside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 5 |
| Nearside Front Anti-roll bar linkage rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 5 |
| Front brake disc in such a condition that it is seriously weakened | 5 |
| Offside Obligatory mirror missing |8.1.1| | 5 |
| Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 5 |
| Brake load sensing valve linkage defective and function impaired |3.6.E.3| | 5 |
| Nearside Front Direction indicator incomplete |1.5.A1b| | 5 |
| Nearside Front Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 5 |
| Front Exhaust has part of the system excessively deteriorated |7.1.1a| | 5 |
| Nearside Front Anti-roll bar rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 4 |
| Nearside Front Upper Ball joint has excessive play |2.2.B.1f| | 4 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 4 |
| Rear Rear fog lamp not working |1.3.2b| | 4 |
| Rear Stop lamp not working |1.2.1b| | 4 |
| Stop lamp not working |1.2.1b| | 4 |
| Nearside Rear position lamp|s| incomplete |1.1.4a| | 4 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 4 |
| Exhaust carbon monoxide content at idle exceeds manufacturers specified limits (8.2.1.2 (b)) | 4 |
| Offside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 4 |
| Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 4 |
| Offside Headlamp not working on main beam |1.7.5a| | 4 |
| Offside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 4 |
| Nearside Rear Lower Shock absorber has an excessively worn bush |2.7.4| | 4 |
| Offside Front Anti-roll bar linkage rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 4 |
| Offside Front Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 4 |
| Service brake: efficiency below requirements |3.7.B.7| | 4 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 4 |
| Front Exhaust system not adequately supported |7.1.1| | 4 |
| Offside Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 4 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 4 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 4 |
| Windscreen washer not working | 4 |
| Offside Rear Brake hose excessively damaged |3.6.B.4d| | 3 |
| An item not tested |Manual| | 3 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 3 |
| Nearside Obligatory mirror missing |8.1.1| | 3 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 3 |
| Front position lamp|s| not working |1.1.A.3b| | 3 |
| Nearside Front Headlamp insecure |1.7.3| | 3 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 3 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits |8.2.1.2 |b|| | 3 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 3 |
| Exhaust engine idle speed too high |7.3.D.1| | 3 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 3 |
| Nearside Front Windscreen wiper blade deteriorated |8.2.2| | 3 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 3 |
| Nearside Front Anti-roll bar linkage rubber mounting deteriorated resulting in excessive movement |2.4.G.2| | 3 |
| Nearside Front Wheel nut|s| missing |4.2.A.1e| | 3 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 3 |
| Nearside front brake binding |3.7.B.1| | 3 |
| Brake pedal anti-slip provision missing |3.3.A.1b| | 3 |
| Offside Front Shock absorbers has a serious fluid leak | 3 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 3 |
| Nearside Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 3 |
| Nearside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 3 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 3 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 3 |