| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 155 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 134 |
| Windscreen wiper does not clear the windscreen effectively | 111 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 96 |
| Headlamp aim out of alignment | 83 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 56 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 45 |
| Windscreen washer not working | 42 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 40 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 37 |
| Registration plate issues | 34 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 24 |
| Anti-lock braking system warning lamp indicates an ABS fault | 23 |
| Exhaust emissions exceed default limit of 0.7m-1 (8.2.2.2 (b)) | 23 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 22 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 21 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 21 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 18 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 16 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 14 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 13 |
| Nearside Front Lower Shock absorbers has an excessively worn bush (5.3.2 (c)) | 11 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 11 |
| Offside Front Axle king pin is loose in the axle beam (5.1.2 (d) (i)) | 11 |
| Brakes imbalanced across an axle | 9 |
| Windscreen damaged and affecting the drivers view of the road (3.2 (a) (ii)) | 9 |
| Engine MIL inoperative or indicates a malfunction |8.2.2.2 |g|| | 9 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 9 |
| Offside Front Lower Shock absorbers has an excessively worn bush (5.3.2 (c)) | 8 |
| Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f)) | 8 |
| Offside Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 8 |
| Nearside Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 8 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 7 |
| Nearside Front Shock absorbers has an excessively worn bush (5.3.2 (c)) | 7 |
| Nearside Front Axle king pin is loose in the axle beam (5.1.2 (d) (i)) | 7 |
| Offside Rear Direction indicator lens defective such that the emitted light is adversely affected (4.4.1 (b) (ii)) | 7 |
| Stop lamp(s) all not working (4.3.1 (a) (iii)) | 7 |
| Electronic stability control warning lamp indicates a fault |7.12 |e|| | 7 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 6 |
| Nearside Rear Direction indicator lens defective such that the emitted light is adversely affected (4.4.1 (b) (ii)) | 6 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 6 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Exhaust on a vehicle fitted with a diesel particulate filter emits visible smoke of any colour (8.2.2.2 (d)) | 6 |
| Offside Track rod end ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii)) | 5 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 5 |
| Offside Front Axle king pin so loose it is likely to affect directional stability (5.1.2 (d) (ii)) | 5 |
| Offside Rear Shock absorbers has a serious fluid leak | 5 |
| Reversing lamp inoperative (4.6.1 (a)) | 5 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 5 |
| Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 5 |
| Offside Stop lamp(s) adversely affected by the operation of another lamp (4.3.3 (b)) | 5 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 5 |
| Oil leaking excessively from engine (8.4.1 (a) (i)) | 5 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Nearside Rear Service brake excessively fluctuating (1.2.1 (e)) | 4 |
| Nearside Rear Position lamp lens seriously defective (4.2.1 (b)) | 4 |
| Offside Front Shock absorbers has an excessively worn bush (5.3.2 (c)) | 4 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 4 |
| Nearside Rear Stop lamp(s) adversely affected by the operation of another lamp (4.3.3 (b)) | 4 |
| Offside Front Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 4 |
| Front Position lamp not working both (4.2.1 (a) (ii)) | 4 |
| Trailer electrical socket likely to become detached (4.10 (a) (ii)) | 4 |
| Horn not working (7.7 (a)) | 4 |
| Nearside Front Axle king pin so loose it is likely to affect directional stability (5.1.2 (d) (ii)) | 4 |
| Exhaust emissions exceed level of metered smoke for a non-turbo charged engine (8.2.2.2 (b)) | 4 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Nearside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 4 |
| Offside Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (c)) | 3 |
| Offside Rear Stop lamp(s) adversely affected by the operation of another lamp (4.3.3 (b)) | 3 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Exhaust emissions exceed default limit of 0.7m-1 |8.2.2.2 |b|| | 3 |
| Nearside Track rod end ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii)) | 3 |
| Exhaust emissions exceed level of metered smoke for a turbo charged engine (8.2.2.2 (b)) | 3 |
| Nearside Front Upper Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 3 |
| Power steering malfunctioning (2.1.5 (a)) | 3 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Nearside Rear Upper Shock absorbers has an excessively worn bush (5.3.2 (c)) | 3 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 3 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 3 |
| Nearside Rear Brake disc contaminated (1.1.14 (b)) | 3 |
| Offside Rear Stop lamp(s) lens defective such that the emitted light is adversely affected (4.3.1 (b) (ii)) | 3 |
| Offside Front Windscreen damaged and affecting the drivers view of the road (3.2 (a) (ii)) | 3 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Fuel cap/sealing device missing (6.1.3 (b) (i)) | 3 |
| Nearside Reversing lamp inoperative (4.6.1 (a)) | 3 |
| Nearside Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Rear fog lamp not working |4.5.1 |a| |ii|| | 3 |
| Windscreen in an unacceptable condition (3.2 (c) (i)) | 3 |
| Nearside Rear Outline marker lamp not working (4.2.1 (a) (ii)) | 3 |
| Battery insecure and likely to fall from carrier (4.13 (a) (ii)) | 3 |