| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 149 |
| Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g)) | 117 |
| Windscreen wiper does not clear the windscreen effectively | 106 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 69 |
| Headlamp aim out of alignment | 53 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 39 |
| Registration plate issues | 37 |
| Anti-lock braking system warning lamp indicates an ABS fault | 35 |
| Exhaust emissions exceed default limit of 0.7m-1 (8.2.2.2 (b)) | 30 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 29 |
| Windscreen washer not working | 28 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 21 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 21 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 19 |
| Offside Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 18 |
| Offside Rear fog lamp not working (4.5.1 (a) (ii)) | 18 |
| Brakes imbalanced across an axle | 17 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 17 |
| Nearside Front Lower Shock absorbers has an excessively worn bush (5.3.2 (c)) | 16 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 11 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 11 |
| Horn not working (7.7 (a)) | 10 |
| Engine MIL inoperative or indicates a malfunction |8.2.2.2 |g|| | 10 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 10 |
| Electronic stability control warning lamp indicates a fault |7.12 |e|| | 9 |
| Rear fog lamp not working |4.5.1 |a| |ii|| | 9 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 9 |
| Stop lamp(s) all not working (4.3.1 (a) (iii)) | 9 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 9 |
| Offside Front Lower Shock absorbers has an excessively worn bush (5.3.2 (c)) | 9 |
| Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 9 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 8 |
| Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 8 |
| Nearside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 8 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Offside Rear Upper 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 |
| Exhaust on a vehicle fitted with a diesel particulate filter emits visible smoke of any colour (8.2.2.2 (d)) | 6 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 6 |
| Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Nearside Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 6 |
| Nearside Rear Upper Shock absorbers has an excessively worn bush (5.3.2 (c)) | 6 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 6 |
| Nearside Rear Direction indicator lens defective such that the emitted light is adversely affected (4.4.1 (b) (ii)) | 6 |
| Reversing lamp inoperative (4.6.1 (a)) | 6 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 5 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Offside Front Shock absorbers has an excessively worn bush (5.3.2 (c)) | 5 |
| Rear Rear fog lamp not working (4.5.1 (a) (ii)) | 5 |
| Offside Rear Direction indicator lens defective such that the emitted light is adversely affected (4.4.1 (b) (ii)) | 5 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 5 |
| Nearside Rear Outline marker lamp not working (4.2.1 (a) (ii)) | 4 |
| Oil leaking excessively from engine (8.4.1 (a) (i)) | 4 |
| Nearside Front Service brake excessively fluctuating (1.2.1 (e)) | 4 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 4 |
| Nearside Front Shock absorbers has an excessively worn bush (5.3.2 (c)) | 4 |
| Offside Front Axle king pin is loose in the axle beam (5.1.2 (d) (i)) | 4 |
| Exhaust emissions exceed level of metered smoke for a non-turbo charged engine (8.2.2.2 (b)) | 4 |
| Windscreen has damage | 4 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 4 |
| Emissions unable to be completed (8.2.2.2 (e)) | 4 |
| Brake pipe excessively corroded | 4 |
| Offside Front Lower Suspension component ball joint excessively worn (5.3.4 (a) (i)) | 4 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 4 |
| Windscreen in such a condition that visibility through swept area is seriously affected (3.2 (c) (ii)) | 3 |
| Nearside Front Lower Shock absorbers has an excessively worn bush |5.3.2 |c|| | 3 |
| Nearside Front Leaf spring shackle pin or bush excessively worn rear bush (5.3.4 (a) (i)) | 3 |
| Offside Stop lamp(s) lens defective such that the emitted light is adversely affected (4.3.1 (b) (ii)) | 3 |
| Exhaust emissions exceed default limit of 0.7m-1 |8.2.2.2 |b|| | 3 |
| Offside Front Outline marker lamp not working (4.2.1 (a) (ii)) | 3 |
| Offside Rear Outline marker lamp does not illuminate simultaneously with the position lamps (4.2.2 (a)) | 3 |
| Offside Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 3 |
| Rear Exhaust system insecure (6.1.2 (a)) | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 3 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 3 |
| Windscreen damaged and affecting the drivers view of the road (3.2 (a) (ii)) | 3 |
| Trailer electrical socket (13 pin) not operating the trailer lamps as intended (4.10 (c) (i)) | 3 |
| Offside Rear Shock absorbers has a serious fluid leak | 3 |
| Nearside Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (c)) | 3 |
| Nearside Position lamp not working (4.2.1 (a) (ii)) | 3 |
| Trailer electrical socket wiring insulation damaged or deteriorated and likely to cause a short-circuit (4.10 (b) (ii)) | 3 |
| Offside Front 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 |
| Offside Rear Service brake lagging in operation (1.2.1 (d)) | 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 |
| Offside Rear fog lamp not working |4.5.1 |a| |ii|| | 3 |
| Nearside Front Lower Suspension component ball joint excessively worn (5.3.4 (a) (i)) | 3 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Offside Rear Outline marker lamp not working (4.2.1 (a) (ii)) | 3 |
| Nearside Rear Outline marker lamp not working |4.2.1 |a|| | 3 |