| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 179 |
| Windscreen wiper does not clear the windscreen effectively | 174 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 99 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 90 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 82 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 67 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 65 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 54 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 40 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 37 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 32 |
| Exhaust carbon monoxide content at idle exceeds manufacturers specified limits (8.2.1.2 (b)) | 31 |
| Registration plate lamp issues | 28 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 24 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 22 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 18 |
| Rear brake disc in such a condition that it is seriously weakened | 18 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits |8.2.1.2 |b|| | 16 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturer`s specified limits |8.2.1.2 |a|| | 14 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 13 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 12 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits |8.2.1.2 |b|| | 11 |
| Brakes imbalanced across an axle | 11 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 10 |
| Registration plate issues | 10 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 10 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds manufacturer`s specified limits |8.2.1.2 |a|| | 10 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 9 |
| Windscreen washer not working | 7 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 7 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 6 |
| Exhaust emissions hydrocarbon content excessive (8.2.1.2 (b)) | 6 |
| Fuel cap/sealing device ineffective (6.1.3 (b) (i)) | 6 |
| Brake fluid warning lamp illuminated (3.6.G.2) | 5 |
| Rear Mechanical brake component has restricted free movement | 5 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 5 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 5 |
| Exhaust carbon monoxide content at idle exceeds manufacturer`s specified limits |8.2.1.2 |b|| | 5 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 5 |
| Exhaust emits excessive dense blue smoke during acceleration (8.2.1.2 (g)) | 5 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 5 |
| Rear brake binding | 5 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 4 |
| Exhaust carbon monoxide content at idle exceeds default limits |8.2.1.2 |b|| | 4 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive (7.3.D.3) | 4 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 4 |
| Windscreen wiper blade insecure | 4 |
| Exhaust emissions carbon monoxide content at idle excessive (7.3.D.4) | 4 |
| Windscreen has damage | 4 |
| Offside Front Position lamp not working (4.2.1 (a)) | 4 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 4 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive (7.3.D.3) | 3 |
| Offside Rear Direction indicator incorrect colour (1.4.A.2f) | 3 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 3 |
| Brake fluid warning lamp illuminated |3.6.G.2| | 3 |
| Exhaust emissions likely to be affected by an exhaust leak (8.2.1.1 (b)) | 3 |
| Emissions not tested (8.2.1.2 (d)) | 3 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits (7.3.D.3) | 3 |
| Offside Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Offside Rear Service brake excessively binding |1.2.1 |f|| | 3 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 3 |
| Offside Front Position lamp not working |4.2.1 |a|| | 3 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 3 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 3 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone A (8.3.1e) | 3 |
| Nearside Rear Upper Position lamp not working (4.2.1 (a) (ii)) | 3 |
| Nearside Front Position lamp not working |4.2.1 |a| |ii|| | 3 |