| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 874 |
| Windscreen wiper does not clear the windscreen effectively | 696 |
| Registration plate lamp issues | 395 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 149 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 134 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 131 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 129 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 126 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 115 |
| Registration plate issues | 103 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 93 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 89 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 74 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 71 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 67 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 58 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 57 |
| Brakes imbalanced across an axle | 55 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 51 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 51 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 50 |
| Rear brake binding | 48 |
| Exhaust carbon monoxide content at idle exceeds manufacturers specified limits (8.2.1.2 (b)) | 44 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 43 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 42 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 41 |
| Anti-lock braking system warning lamp indicates an ABS fault | 40 |
| Rear brake disc in such a condition that it is seriously weakened | 38 |
| Brake pipe excessively corroded | 33 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 33 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 32 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 30 |
| Offside Front Position lamp not working |4.2.1 |a|| | 29 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 27 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits |8.2.1.2 |b|| | 27 |
| Windscreen washer not working | 23 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 22 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 22 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive (7.3.D.3) | 22 |
| Windscreen has damage | 21 |
| Offside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 21 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 20 |
| Nearside Front Shock absorbers has a serious fluid leak | 20 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits (7.3.D.3) | 20 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 20 |
| Nearside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 20 |
| Emissions not tested (8.2.1.2 (d)) | 20 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 19 |
| Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 19 |
| Windscreen wiper blade insecure | 18 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 18 |
| Brake fluid warning lamp illuminated |3.6.G.2| | 17 |
| Offside Front position lamp(s) not working (1.1.A.3b) | 17 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 16 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturer`s specified limits |8.2.1.2 |a|| | 15 |
| Offside Front Position lamp not working (4.2.1 (a)) | 15 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 15 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 15 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 14 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 14 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 14 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 14 |
| Exhaust emissions carbon monoxide content at idle excessive (7.3.D.4) | 14 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 14 |
| Fuel cap/sealing device sealing washer deteriorated |7.2.4c| | 13 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 13 |
| Supplementary restraint system warning lamp indicates a fault |7.1.6 |a|| | 13 |
| Nearside Front position lamp(s) not working (1.1.A.3b) | 13 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 13 |
| Supplementary Restraint System warning lamp indicates a fault (5.4.2) | 13 |
| Oil leaking excessively from engine (8.4.1 (a) (i)) | 13 |
| Parking brake: efficiency below requirements |3.7.B.7| | 12 |
| Offside Rear Direction indicator incorrect colour (1.4.A.2f) | 12 |
| Fuel cap/sealing device ineffective (6.1.3 (b) (i)) | 12 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 12 |
| Offside Stop lamp not working |1.2.1b| | 11 |
| Exhaust carbon monoxide content at idle exceeds manufacturer`s specified limits |8.2.1.2 |b|| | 11 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 11 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits |8.2.1.2 |b|| | 11 |
| Nearside Front Front position lamp(s) not working (1.1.A.3b) | 11 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 11 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 11 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 11 |
| Nearside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 11 |
| Nearside Front Inner Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 11 |