| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 353 |
| Brake pipe excessively corroded | 283 |
| Headlamp aim out of alignment | 268 |
| Horn not working (7.7 (a)) | 89 |
| Registration plate lamp issues | 85 |
| Windscreen washer not working | 60 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 53 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 31 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 30 |
| Horn not working (7.7 (a) (ii)) | 27 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 27 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 27 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 26 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 24 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 24 |
| Offside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 24 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 23 |
| Front brake disc in such a condition that it is seriously weakened | 22 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 19 |
| Offside Rear Shock absorbers has a serious fluid leak | 19 |
| Brakes imbalanced across an axle | 19 |
| Nearside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 19 |
| Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 18 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 17 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 16 |
| Nearside Front Anti-roll bar linkage ball joint excessively worn (5.3.4 (a) (i)) | 15 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 14 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 14 |
| Nearside Front Shock absorbers has a serious fluid leak | 14 |
| Nearside Rear Shock absorbers has a serious fluid leak | 14 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 13 |
| Registration plate issues | 13 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 13 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 13 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 12 |
| Horn not working |7.7 |a| |ii|| | 11 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 11 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 11 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 11 |
| Offside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 11 |
| Offside Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 10 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 10 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 10 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 10 |
| Offside Front Shock absorbers has a serious fluid leak | 9 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 9 |
| Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 9 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 8 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 8 |
| Emissions unable to be completed (8.2.1.2 (d)) | 8 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 8 |
| Offside Front Service brake excessively fluctuating (1.2.1 (e)) | 7 |
| Emissions not tested (8.2.1.2 (d)) | 7 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 7 |
| Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 7 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 7 |
| Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 7 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 6 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 6 |
| Front Service brake excessively fluctuating (1.2.1 (e)) | 6 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 6 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 6 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 6 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 6 |
| Nearside Front Service brake excessively fluctuating (1.2.1 (e)) | 6 |
| Nearside Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 5 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 5 |
| Offside Headlamp levelling device inoperative (4.1.5 (a)) | 5 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 5 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 5 |
| Nearside Front Anti-roll bar ball joint excessively worn (5.3.4 (a) (i)) | 5 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 5 |
| Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 5 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 5 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 5 |
| Offside Front Position lamp not working |4.2.1 |a|| | 5 |