| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 352 |
| Headlamp aim out of alignment | 274 |
| Brake pipe excessively corroded | 144 |
| Registration plate lamp issues | 128 |
| Brakes imbalanced across an axle | 100 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 90 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 59 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 54 |
| Offside Stop lamp not working |1.2.1b| | 53 |
| Nearside Stop lamp not working |1.2.1b| | 50 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 49 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 48 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 40 |
| Front brake disc in such a condition that it is seriously weakened | 36 |
| Registration plate issues | 36 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 26 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 23 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 22 |
| Nearside Rear Stop lamp not working |1.2.1b| | 21 |
| Front brake application uneven | 20 |
| Emissions not tested |7.0| | 20 |
| Brake pedal spongy |3.3.B.1b| | 20 |
| Brake pedal has insufficient reserve movement |3.3.A.5| | 19 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 18 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 17 |
| Parking brake: efficiency below requirements |3.7.B.7| | 16 |
| Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 16 |
| Horn not working |1.6.2a| | 15 |
| Offside Rear Stop lamp not working |1.2.1b| | 14 |
| Brake hose excessively deteriorated | 14 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 12 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 12 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 12 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 12 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 11 |
| Nearside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 11 |
| Offside Front brake disc excessively pitted |3.5.1h| | 11 |
| Service brake: efficiency below requirements |3.7.B.7| | 11 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 11 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 10 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 10 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 10 |
| Emissions not tested (8.2.1.2 (d)) | 10 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 9 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 9 |
| Nearside front brake binding |3.7.B.1| | 9 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 9 |
| Rear brake application uneven | 8 |
| Offside Rear Exhaust has a major leak of exhaust gases |7.1.2| | 8 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 8 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 8 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 8 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 8 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 8 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 8 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 8 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 8 |
| Nearside Front Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 8 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 8 |
| Emissions not tested |7.3.A.1| | 8 |
| Battery insecure |1.9.1| | 8 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 7 |
| Anti-lock braking system warning lamp indicates an ABS fault | 7 |
| Windscreen wiper blade insecure | 7 |
| Offside Front Position lamp not working |4.2.1 |a|| | 7 |
| Offside front brake binding |3.7.B.1| | 7 |
| Parking brake lever has no reserve travel |3.1.6b| | 7 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 7 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 7 |
| Offside Front Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 7 |
| Rear parking brake recording little or no effort | 7 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 7 |
| Offside Front front brake binding |3.7.B.1| | 7 |
| Rear brake binding | 6 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 6 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 6 |
| Nearside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 6 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 6 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 6 |
| Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 6 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 6 |
| Centre Rear Exhaust has a major leak of exhaust gases |7.1.2| | 5 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 5 |
| Offside Front Headlamp levelling device inoperative (4.1.5 (a)) | 5 |
| Nearside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength inner arch (5.3.6 (a) (i)) | 5 |
| Offside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 5 |
| Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength outer sill (5.3.6 (a) (i)) | 5 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 5 |
| Offside Rear Inner Suspension component mounting prescribed area excessively corroded significantly reducing structural strength sill (5.3.6 (a) (i)) | 5 |
| Offside Rear Rear wheel bearing has excessive play |2.6.2| | 5 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded outer sill |2.4.A.3| | 5 |
| Rear Exhaust system not adequately supported |7.1.1| | 5 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 5 |
| Exhaust emits excessive dense blue smoke during acceleration |7.3.A.2c| | 5 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded sill |2.4.A.3| | 5 |
| Exhaust tailpipe not capable of allowing the emission probe to be inserted |7.3.D.1| | 5 |
| Offside Rear Service brake excessively binding |1.2.1 |f|| | 5 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 5 |