| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 1408 |
| Registration plate lamp issues | 1305 |
| Headlamp aim out of alignment | 1065 |
| Parking brake: efficiency below requirements |3.7.B.7| | 461 |
| Brake pipe excessively corroded | 456 |
| Brakes imbalanced across an axle | 447 |
| Registration plate issues | 348 |
| Rear parking brake recording little or no effort | 272 |
| Parking brake lever has no reserve travel |3.1.6b| | 270 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 266 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 256 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 252 |
| Nearside Stop lamp not working |1.2.1b| | 197 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 179 |
| Rear brake binding | 147 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 146 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 145 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 141 |
| Front brake disc in such a condition that it is seriously weakened | 139 |
| Front brake application uneven | 128 |
| Offside Stop lamp not working |1.2.1b| | 124 |
| Brake hose excessively deteriorated | 122 |
| Battery insecure |1.9.1| | 119 |
| Offside front brake binding |3.7.B.1| | 112 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 99 |
| Nearside Rear Stop lamp not working |1.2.1b| | 93 |
| Nearside front brake binding |3.7.B.1| | 92 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 88 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 82 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 77 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 76 |
| Nearside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 74 |
| Offside Rear Stop lamp not working |1.2.1b| | 74 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 72 |
| Offside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 71 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 69 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 67 |
| Rear brake disc in such a condition that it is seriously weakened | 66 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 59 |
| Centre Stop lamp not working |1.2.1b| | 53 |
| Offside Front front brake binding |3.7.B.1| | 50 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 48 |
| Windscreen wiper blade insecure | 47 |
| Nearside Front front brake binding |3.7.B.1| | 46 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 46 |
| Anti-lock braking system warning lamp indicates an ABS fault | 44 |
| Offside Side repeater incorrect colour |1.4.A.2f| | 41 |
| Windscreen has damage | 40 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 40 |
| Service brake: efficiency below requirements |3.7.B.7| | 38 |
| Nearside Side repeater incorrect colour |1.4.A.2f| | 38 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 37 |
| Rear brake application uneven | 36 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 34 |
| Mechanical brake component has restricted free movement | 34 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 33 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 33 |
| Offside Front brake disc excessively pitted |3.5.1h| | 32 |
| Nearside Headlamp insecure |1.7.3| | 30 |
| Exhaust emits excessive smoke or vapour of any colour |7.4.B.4| | 30 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 28 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 28 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 27 |
| Offside Front coil spring broken |2.4.C.1a| | 26 |
| Offside Rear fog lamp not working |1.3.2b| | 26 |
| Front brake excessively fluctuating | 26 |
| Windscreen washer not working | 26 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 26 |
| Offside Rear coil spring broken |2.4.C.1a| | 25 |
| Offside Front Macpherson strut has excessive movement at the upper attachment |2.5.A.1c| | 24 |
| Front position lamp|s| not working |1.1.A.3b| | 24 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 24 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 23 |
| Rear fog lamp not working |1.3.2b| | 23 |
| Offside Headlamp insecure |1.7.3| | 22 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 22 |
| Offside Front Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 22 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 22 |
| Stop lamp not working |1.2.1b| | 21 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 21 |
| Offside Front Position lamp not working |4.2.1 |a|| | 21 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 21 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 21 |
| 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| | 20 |
| Offside Front Direction indicators incorrect colour |1.4.A.2f| | 20 |
| Rear Mechanical brake component has restricted free movement | 20 |
| Offside Front wheel bearing rough when rotated |2.5.A.2| | 20 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 20 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 20 |
| Nearside Front Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 20 |