| Most common failures | No# failures |
|---|
| Windscreen wiper does not clear the windscreen effectively | 12341 |
| Headlamp aim out of alignment | 10939 |
| Registration plate lamp issues | 5924 |
| Brake pipe excessively corroded | 4484 |
| Brakes imbalanced across an axle | 3951 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 2628 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 2546 |
| Registration plate issues | 2032 |
| Rear brake binding | 1767 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1645 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 1539 |
| Rear parking brake recording little or no effort | 1068 |
| Rear Exhaust system not adequately supported |7.1.1| | 1064 |
| Centre Stop lamp not working |1.2.1b| | 1007 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 966 |
| Offside Stop lamp not working |1.2.1b| | 891 |
| Nearside Stop lamp not working |1.2.1b| | 876 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 743 |
| Front brake application uneven | 733 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 704 |
| Rear brake application uneven | 692 |
| Offside Side repeater incorrect colour |1.4.A.2f| | 627 |
| Offside front brake binding |3.7.B.1| | 600 |
| Nearside Side repeater incorrect colour |1.4.A.2f| | 513 |
| Service brake: efficiency below requirements |3.7.B.7| | 506 |
| Battery insecure |1.9.1| | 505 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 505 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 499 |
| Offside Rear fog lamp not working |1.3.2b| | 471 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 464 |
| Offside Rear Stop lamp not working |1.2.1b| | 410 |
| Nearside Rear Stop lamp not working |1.2.1b| | 403 |
| Windscreen wiper blade insecure | 401 |
| Horn not working |1.6.2a| | 385 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 363 |
| Nearside front brake binding |3.7.B.1| | 363 |
| Windscreen has damage | 347 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 341 |
| Rear fog lamp not working |1.3.2b| | 340 |
| Rear fog lamp switch faulty |1.3.1a| | 333 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 333 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 317 |
| Exhaust system not adequately supported |7.1.1| | 304 |
| Parking brake lever has no reserve travel |3.1.6b| | 299 |
| Brake hose excessively deteriorated | 297 |
| Offside Front front brake binding |3.7.B.1| | 283 |
| Mechanical brake component has restricted free movement | 279 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 272 |
| Front brake disc in such a condition that it is seriously weakened | 266 |
| Rear fog lamp tell tale not working |1.3.1b| | 260 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 259 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 258 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 255 |
| Rear Mechanical brake component has restricted free movement | 245 |
| Nearside Headlamp insecure |1.7.3| | 240 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 222 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 218 |
| Anti-lock braking system warning lamp indicates an ABS fault | 218 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 211 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 211 |
| Offside Front brake disc excessively pitted |3.5.1h| | 206 |
| Centre Rear Stop lamp not working |1.2.1b| | 199 |
| Offside Front Position lamp not working |4.2.1 |a|| | 195 |
| Nearside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 194 |
| Rear brake disc in such a condition that it is seriously weakened | 193 |
| Offside Headlamp insecure |1.7.3| | 190 |
| Stop lamp not working |1.2.1b| | 188 |
| Offside Front Side repeater incorrect colour |1.4.A.2f| | 188 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 185 |
| Emissions not tested |7.0| | 184 |
| Offside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 176 |
| Offside Obligatory mirror seriously damaged, affecting the rear view |8.1.2a| | 170 |
| Front position lamp|s| not working |1.1.A.3b| | 168 |
| Nearside Front front brake binding |3.7.B.1| | 167 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 162 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 157 |
| Nearside Front Side repeater incorrect colour |1.4.A.2f| | 154 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 151 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 150 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 149 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 146 |