| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 806 |
| Registration plate issues | 308 |
| Windscreen wiper does not clear the windscreen effectively | 237 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 199 |
| Registration plate lamp issues | 172 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 171 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 119 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 95 |
| Rear parking brake recording little or no effort | 59 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 58 |
| Brakes imbalanced across an axle | 52 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 46 |
| Horn not working |1.6.2a| | 42 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 38 |
| Front brake disc in such a condition that it is seriously weakened | 37 |
| Parking brake: efficiency below requirements |3.7.B.7| | 37 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 36 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 36 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 33 |
| Rear brake binding | 33 |
| Rear brake disc in such a condition that it is seriously weakened | 28 |
| Parking brake lever has no reserve travel |3.1.6b| | 28 |
| Brake pipe excessively corroded | 27 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 26 |
| Hazard warning switch faulty |1.4.B.1d| | 25 |
| Emissions not tested |7.0| | 25 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 24 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 20 |
| Windscreen washer not working | 19 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 18 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 18 |
| Offside Front brake disc excessively pitted |3.5.1h| | 18 |
| Offside Rear fog lamp not working |1.3.2b| | 18 |
| Offside Stop lamp not working |1.2.1b| | 17 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 17 |
| Windscreen has damage | 16 |
| Offside Side repeater incorrect colour |1.4.A.2f| | 16 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 16 |
| Front passenger door cannot be opened from outside the vehicle |6.2.B.1b| | 15 |
| Stop lamp remains on when the brakes are released | 15 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 14 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 14 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 14 |
| Nearside Stop lamp not working |1.2.1b| | 13 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 13 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 13 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 12 |
| Service brake: efficiency below requirements |3.7.B.7| | 11 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 11 |
| Offside Rear Shock absorbers has a serious fluid leak | 11 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive (7.3.D.3) | 11 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits |8.2.1.2 |b|| | 10 |
| Direction indicators not working |1.4.A.2c| | 10 |
| Nearside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 10 |
| Brake hose excessively deteriorated | 10 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 9 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 9 |
| Front Windscreen wiper not operating automatically when switched on |8.2.1b| | 9 |
| Nearside Rear Shock absorbers has a serious fluid leak | 9 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 9 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 9 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits |8.2.1.2 |b|| | 8 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 8 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 8 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 8 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 8 |
| Stop lamp not working |1.2.1b| | 8 |
| Nearside Side repeater incorrect colour |1.4.A.2f| | 8 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 8 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 8 |
| Exhaust catalytic converter missing where one was fitted as standard |7.1.3| | 8 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 8 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 8 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 8 |
| Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f| | 7 |
| Rear brake application uneven | 7 |
| Offside Front Shock absorbers has a serious fluid leak | 7 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 7 |
| Hazard warning lamps inoperative (4.4.1 (e)) | 7 |