| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 1254 |
| Windscreen wiper does not clear the windscreen effectively | 861 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 381 |
| Registration plate lamp issues | 332 |
| Brakes imbalanced across an axle | 287 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 250 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 245 |
| Front brake disc in such a condition that it is seriously weakened | 221 |
| Registration plate issues | 216 |
| Rear brake binding | 198 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 180 |
| Offside Stop lamp not working |1.2.1b| | 172 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 159 |
| Parking brake: efficiency below requirements |3.7.B.7| | 142 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 140 |
| Nearside Stop lamp not working |1.2.1b| | 126 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 121 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 111 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 106 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 106 |
| Horn not working |1.6.2a| | 103 |
| Rear parking brake recording little or no effort | 89 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 89 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 89 |
| Offside Front brake disc excessively pitted |3.5.1h| | 85 |
| Service brake: efficiency below requirements |3.7.B.7| | 82 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 82 |
| Parking brake lever has no reserve travel |3.1.6b| | 81 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 80 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 79 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 78 |
| Hazard warning switch faulty |1.4.B.1d| | 77 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 75 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 72 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 72 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 72 |
| Brake pipe excessively corroded | 69 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 66 |
| Rear brake application uneven | 61 |
| Emissions not tested |7.0| | 60 |
| Front Exhaust system not adequately supported |7.1.1| | 59 |
| Brake hose excessively deteriorated | 58 |
| Offside Rear Stop lamp not working |1.2.1b| | 58 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 56 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 54 |
| Nearside Front constant velocity joint gaiter split |2.5.C.1a| | 53 |
| Battery insecure |1.9.1| | 52 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 51 |
| Nearside Rear Stop lamp not working |1.2.1b| | 50 |
| Nearside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 50 |
| Exhaust system not adequately supported |7.1.1| | 48 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 48 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 48 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 44 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 43 |
| Nearside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 43 |
| Brake load sensing valve linkage seized |3.6.E.3| | 43 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 41 |
| Stop lamp not working |1.2.1b| | 40 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 40 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 40 |
| Front brake application uneven | 39 |
| Front brake excessively fluctuating | 39 |
| Centre Stop lamp not working |1.2.1b| | 38 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 38 |
| Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f| | 36 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 36 |
| Windscreen has damage | 36 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 35 |
| Offside Front Lower Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 34 |
| Nearside Front Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 33 |
| Nearside Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 33 |
| Nearside Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 32 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 32 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 32 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 31 |
| Front brake disc excessively pitted |3.5.1h| | 30 |
| Nearside Outer Front constant velocity joint gaiter deteriorated to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 29 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 29 |
| Rear Mechanical brake component has restricted free movement | 29 |
| Brake servo vacuum pipe split |3.6.C.1b| | 29 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 28 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 28 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 28 |
| Offside Rear fog lamp not working |1.3.2b| | 28 |
| Offside Front Suspension arm rubber bush bonding deteriorated resulting in excessive movement |2.4.G.2| | 28 |
| Offside Rear coil spring broken |2.4.C.1a| | 26 |
| Centre Exhaust system not adequately supported |7.1.1| | 25 |
| Brake load sensing valve seized |3.6.E.3| | 25 |
| Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 24 |
| Anti-lock braking system warning lamp indicates an ABS fault | 24 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 23 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 23 |
| Nearside Rear coil spring broken |2.4.C.1a| | 22 |
| Offside Rear Shock absorbers has a serious fluid leak | 22 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 21 |
| Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 21 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 21 |
| Rear Brake load sensing valve linkage seized |3.6.E.3| | 20 |
| Rear fog lamp not working |1.3.2b| | 20 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 20 |
| Offside Front coil spring broken |2.4.C.1a| | 20 |
| Windscreen wiper blade insecure | 19 |
| Rear Exhaust system not adequately supported |7.1.1| | 19 |
| Stop lamp remains on when the brakes are released | 19 |
| Offside Front Suspension arm has excessive play in a pin/bush |2.4.G.2| | 19 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 18 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 18 |
| Nearside Front Direction indicators incorrect colour |1.4.A.2f| | 18 |
| Offside Front Direction indicators incorrect colour |1.4.A.2f| | 18 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 18 |