| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 2283 |
| Windscreen wiper does not clear the windscreen effectively | 902 |
| Registration plate lamp issues | 514 |
| Brake pipe excessively corroded | 464 |
| Brakes imbalanced across an axle | 395 |
| Rear brake binding | 369 |
| Anti-lock braking system warning lamp indicates an ABS fault | 266 |
| Parking brake: efficiency below requirements |3.7.B.7| | 199 |
| Nearside Stop lamp not working |1.2.1b| | 155 |
| Offside Stop lamp not working |1.2.1b| | 149 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 144 |
| Offside front brake binding |3.7.B.1| | 142 |
| Rear parking brake recording little or no effort | 124 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 118 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 111 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 108 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 107 |
| Nearside front brake binding |3.7.B.1| | 98 |
| Rear brake application uneven | 95 |
| Horn not working |1.6.2a| | 88 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 87 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 82 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 79 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 79 |
| Battery insecure |1.9.1| | 77 |
| Offside Front front brake binding |3.7.B.1| | 75 |
| Rear fog lamp not working |1.3.2b| | 71 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 68 |
| Nearside Rear Stop lamp not working |1.2.1b| | 68 |
| Parking brake lever has no reserve travel |3.1.6b| | 67 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 63 |
| Front brake application uneven | 63 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 62 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 60 |
| Mechanical brake component has restricted free movement | 59 |
| Rear Mechanical brake component has restricted free movement | 58 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 58 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 58 |
| Rear fog lamp tell tale not working |1.3.1b| | 57 |
| Nearside Front front brake binding |3.7.B.1| | 57 |
| Offside Front Anti-roll bar linkage ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 56 |
| Fuel system component leaking |7.2.3| | 56 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 55 |
| Front brake disc in such a condition that it is seriously weakened | 54 |
| Offside Rear Rear wheel bearing has excessive play |2.6.2| | 53 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 52 |
| Offside Rear Stop lamp not working |1.2.1b| | 51 |
| Power steering component|s| leaking |2.3.3b| | 50 |
| Nearside Rear wheel bearing rough when rotated |2.6.1| | 50 |
| Hazard warning switch faulty |1.4.B.1d| | 50 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 49 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 49 |
| Registration plate issues | 48 |
| Offside Front Anti-roll bar linkage ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 47 |
| Nearside Front Anti-roll bar linkage ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 46 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 46 |
| Nearside Front Anti-roll bar linkage ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 45 |
| Offside Rear fog lamp not working |1.3.2b| | 44 |
| Power steering pipe|s| or hose|s| leaking |2.3.3b| | 43 |
| Power steering fluid level below minimum |2.3.1| | 42 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 38 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 38 |
| Nearside Rear Rear wheel bearing has excessive play |2.6.2| | 37 |
| Offside Front Service brake excessively binding |1.2.1 |f|| | 35 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 35 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 35 |
| Offside Rear Rear wheel bearing rough when rotated |2.6.1| | 33 |
| Power steering pipe|s| or hose|s| leaking from a joint |2.3.3b| | 33 |
| Nearside Front Service brake excessively binding |1.2.1 |f|| | 33 |
| Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 33 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 32 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 32 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 32 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 32 |
| Offside Side repeater incorrect colour |1.4.A.2f| | 31 |
| Front brake excessively fluctuating | 31 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 31 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 30 |
| Electronic stability system warning lamp indicates a fault |3.4.1c| | 30 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 29 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 29 |
| Nearside Side repeater incorrect colour |1.4.A.2f| | 28 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 28 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 28 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 28 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 28 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 26 |
| Nearside Rear Rear wheel bearing rough when rotated |2.6.1| | 25 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 24 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 24 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits |8.2.1.2 |c|| | 23 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 23 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 22 |
| Nearside Rear Shock absorbers has a serious fluid leak | 22 |
| Offside Rear Shock absorbers has a serious fluid leak | 22 |
| Electronic stability control warning lamp indicates a fault (7.12 (e)) | 22 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 22 |
| Windscreen washer not working | 21 |
| Windscreen wiper blade insecure | 20 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 20 |
| Nearside Headlamp not working on main beam |1.7.5a| | 20 |
| Offside Rear passenger door cannot be opened from outside the vehicle |6.2.B.1c| | 20 |
| Hazard warning lamps inoperative |1.4.B.1b| | 19 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 19 |
| Windscreen has damage | 19 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 19 |
| Nearside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 19 |
| Offside Front Anti-lock braking system component excessively damaged |3.4.2| | 18 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 18 |
| Hazard warning switch inoperative |4.4.2 |a| |ii|| | 18 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 18 |
| Offside Headlamp not working on main beam |1.7.5a| | 18 |
| Nearside Headlamp insecure |1.7.3| | 17 |
| Service brake: efficiency below requirements |3.7.B.7| | 17 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 17 |
| Offside Front Anti-roll bar ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 17 |
| Nearside Front Anti-roll bar ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 17 |
| Offside Front Anti-roll bar ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 17 |
| Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt |5.3.4 |b| |ii|| | 17 |
| Emissions not tested |7.0| | 17 |
| Power steering pipe|s| or hose|s| leaking from a seal |2.3.3b| | 17 |
| Stop lamp not working |1.2.1b| | 17 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 17 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 17 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 17 |
| Horn not working (7.7 (a)) | 17 |
| Nearside Front Road wheel bead rim badly distorted |4.2.A.1a| | 16 |
| Offside Rear Service brake excessively binding |1.2.1 |f|| | 16 |
| Offside Front Anti-roll bar ball joint dust cover no longer prevents the ingress of dirt |5.3.4 |b| |ii|| | 16 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 16 |