| Most common failures | No# failures |
|---|
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 431 |
| Headlamp aim out of alignment | 364 |
| Windscreen wiper does not clear the windscreen effectively | 326 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 285 |
| Registration plate issues | 245 |
| Registration plate lamp issues | 193 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 179 |
| Brake pipe excessively corroded | 158 |
| Exhaust catalytic converter missing where one was fitted as standard |7.1.3| | 121 |
| Offside Rear fog lamp not working |1.3.2b| | 73 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 70 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 60 |
| Rear fog lamp not working |1.3.2b| | 57 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 54 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 50 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 47 |
| Anti-lock braking system warning lamp indicates an ABS fault | 40 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 35 |
| Emissions not tested |7.0| | 34 |
| Parking brake lever has no reserve travel |3.1.6b| | 33 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 32 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 31 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 29 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 28 |
| Exhaust catalytic converter missing where one was fitted as standard (8.2.1.1 (a)) | 27 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 26 |
| Windscreen has damage | 26 |
| Rear fog lamp tell tale not working |1.3.1b| | 26 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 26 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 24 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 21 |
| Exhaust has a part missing |7.1.1a| | 21 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds default limits |8.2.1.2 |b|| | 20 |
| Rear fog lamp not working (4.5.1 (a) (ii)) | 19 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 18 |
| Horn not working |1.6.2a| | 18 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 17 |
| Exhaust carbon monoxide content at idle exceeds manufacturers specified limits (8.2.1.2 (b)) | 17 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 17 |
| Exhaust carbon monoxide content at idle exceeds default limits (8.2.1.2 (b)) | 17 |
| Rear brake disc in such a condition that it is seriously weakened | 16 |
| Offside Front Wheel nut|s| missing |4.2.A.1e| | 16 |
| Nearside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 15 |
| Windscreen has a sticker or other obstruction encroaching by more than 10mm within zone `A` |8.3.1b| | 15 |
| Rear fog lamp missing |1.3.2a| | 14 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 14 |
| Nearside Rear Stop lamp not working |1.2.1b| | 14 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 13 |
| Rear Rear fog lamp not working |1.3.2b| | 13 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 13 |
| Nearside Rear Suspension arm has excessive play in a pin/bush |2.4.G.2| | 12 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 12 |
| Nearside Stop lamp not working |1.2.1b| | 12 |
| Exhaust catalytic converter missing where one was fitted as standard |8.2.1.1 |a|| | 12 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 12 |
| Offside Stop lamp not working |1.2.1b| | 12 |
| Windscreen wiper blade insecure | 12 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 12 |
| Brake hose has insufficient room to move | 12 |
| Front brake disc in such a condition that it is seriously weakened | 11 |
| Emissions not tested (8.2.1.2 (d)) | 11 |
| Offside Rear fog lamp missing |1.3.2a| | 11 |
| Rear fog lamp switch missing |1.3.1a| | 11 |
| Windscreen washer not working | 11 |
| Nearside Front Wheel nut|s| missing |4.2.A.1e| | 11 |
| Battery insecure |1.9.1| | 11 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 10 |
| Brakes imbalanced across an axle | 10 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds default limits (8.2.1.2 (b)) | 10 |
| Exhaust noise is clearly in excess of that emitted by a similar vehicle fitted with a standard silencer in average condition |7.1.4| | 10 |
| Nearside Rear Wheel nut|s| missing |4.2.A.1e| | 10 |
| Exhaust hydrocarbon content after 2nd fast idle exceeds manufacturers specified limits (8.2.1.2 (a)) | 9 |
| Nearside Rear Lower Suspension arm has excessive play in a pin/bush |2.4.G.2| | 9 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 9 |
| Rear fog lamp emits a light other than red |1.3.2e| | 9 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 9 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 8 |
| Emissions not tested |7.3.A.1| | 8 |
| Offside Rear fog lamp emits a light other than red |1.3.2e| | 8 |
| Offside Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 8 |
| Service brake juddering severely |3.7.C.2| | 8 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 8 |
| Exhaust catalytic converter missing where one was fitted as standard (8.2.2.1 (a)) | 8 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 7 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 7 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturer`s specified limits |8.2.1.2 |a|| | 7 |
| Offside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 7 |
| Offside Front position lamp|s| incorrect colour |1.1.A.3e| | 7 |
| Offside Rear Rear fog lamp emits a light other than red |1.3.2e| | 7 |
| Brake hose damaged | 7 |
| Nearside Headlamp not working on main beam |1.7.5a| | 7 |
| Offside Front Direction indicators incorrect colour |1.4.A.2f| | 7 |
| Exhaust system not adequately supported |7.1.1| | 7 |
| Offside Rear Wheel nut|s| missing |4.2.A.1e| | 7 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 7 |