| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 467 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 242 |
| Headlamp aim out of alignment | 224 |
| Brake pipe excessively corroded | 122 |
| Registration plate issues | 97 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 75 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 71 |
| Registration plate lamp issues | 65 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 61 |
| Brakes imbalanced across an axle | 59 |
| Front brake disc in such a condition that it is seriously weakened | 57 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 55 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 52 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 46 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 44 |
| Offside Front brake disc excessively pitted |3.5.1h| | 36 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 36 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 34 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 33 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 31 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 30 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 29 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 27 |
| Emissions not tested |7.0| | 26 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 24 |
| Brake hose excessively deteriorated | 24 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 23 |
| Horn not working |1.6.2a| | 23 |
| Windscreen wiper blade insecure | 21 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 20 |
| Front brake application uneven | 18 |
| Exhaust has a part missing |7.1.1a| | 17 |
| Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 16 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 15 |
| Anti-lock braking system warning lamp indicates an ABS fault | 14 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 14 |
| Nearside Stop lamp not working |1.2.1b| | 14 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 13 |
| Exhaust system not adequately supported |7.1.1| | 13 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 13 |
| Nearside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 13 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 13 |
| Front brake disc excessively pitted |3.5.1h| | 13 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 12 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 12 |
| Emissions not tested |7.3.A.1| | 12 |
| Offside Seat belt retracting mechanism defective |5.2.5b| | 12 |
| Offside Front Seat belt retracting mechanism defective |5.2.5b| | 12 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 11 |
| Offside Stop lamp not working |1.2.1b| | 11 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 11 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 11 |
| Rear Exhaust has a part missing |7.1.1a| | 11 |
| Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength inner sill (5.3.6 (a) (i)) | 10 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 10 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 10 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 10 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits |8.2.1.2 |b|| | 10 |
| Nearside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 10 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 9 |
| Emissions not tested (8.2.1.2 (d)) | 9 |
| Nearside Front Macpherson strut has excessive movement at the upper attachment |2.5.A.1c| | 9 |
| Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength inner wheel arch (5.3.6 (a) (i)) | 9 |
| Rear fog lamp not working |1.3.2b| | 9 |
| Offside Front coil spring broken |2.4.C.1a| | 9 |
| Rear brake binding | 9 |
| Parking brake: efficiency below requirements |3.7.B.7| | 9 |
| Offside Front brake disc excessively scored |3.5.1h| | 9 |
| brake disc excessively pitted |3.5.1h| | 9 |
| Horn not working (7.7 (a)) | 8 |
| Offside Front Position lamp not working |4.2.1 |a|| | 8 |
| Nearside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 8 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded inner arch |2.4.A.3| | 8 |
| Nearside front brake juddering severely |3.7.A.2b| | 8 |
| Offside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 8 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 8 |
| Nearside Side repeater not working |1.4.A.2c| | 8 |
| Offside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 7 |
| Windscreen has damage | 7 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 7 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 7 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded inner arch |2.4.A.3| | 7 |
| Offside Rear Outer Suspension component mounting prescribed area excessively corroded significantly reducing structural strength sill (5.3.6 (a) (i)) | 7 |
| Offside front brake juddering severely |3.7.A.2b| | 7 |
| Offside front brake binding |3.7.B.1| | 7 |
| Rear brake application uneven | 7 |
| Rear parking brake recording little or no effort | 7 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 7 |