| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 589 |
| Windscreen wiper does not clear the windscreen effectively | 483 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 209 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 173 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 170 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 145 |
| Registration plate lamp issues | 122 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 121 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 113 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 104 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 93 |
| Exhaust carbon monoxide content at idle exceeds manufacturers specified limits (8.2.1.2 (b)) | 84 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 78 |
| Registration plate issues | 59 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 52 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 51 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 42 |
| Brakes imbalanced across an axle | 36 |
| Rear brake disc in such a condition that it is seriously weakened | 32 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 30 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 27 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 25 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 23 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 22 |
| Rear brake binding | 21 |
| Windscreen washer not working | 21 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 20 |
| Fuel cap/sealing device ineffective (6.1.3 (b) (i)) | 20 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 19 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 19 |
| Offside Front Shock absorbers has a serious fluid leak | 18 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 16 |
| Nearside Front Shock absorbers has a serious fluid leak | 16 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 16 |
| Oil leaking excessively from engine (8.4.1 (a) (i)) | 16 |
| Windscreen has damage | 15 |
| Exhaust emits excessive dense blue smoke during acceleration (8.2.1.2 (g)) | 15 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive (7.3.D.3) | 14 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 14 |
| Brake fluid warning lamp illuminated |3.6.G.2| | 13 |
| Brake fluid warning lamp illuminated (3.6.G.2) | 13 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 13 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 11 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 11 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 11 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 11 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 11 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 10 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 10 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 10 |
| Front Sub-frame corroded and seriously weakened (5.3.3 (b) (i)) | 10 |
| Emissions unable to be completed (8.2.1.2 (d)) | 9 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits |8.2.1.2 |b|| | 8 |
| Windscreen wiper blade insecure | 8 |
| Front brake disc in such a condition that it is seriously weakened | 8 |
| Offside Front Front position lamp(s) not working (1.1.A.3b) | 8 |
| Nearside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 8 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 8 |
| Offside Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 8 |
| Offside Headlamp lens seriously defective (4.1.1 (b) (ii)) | 8 |