| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 178 |
| Headlamp aim out of alignment | 153 |
| Windscreen wiper does not clear the windscreen effectively | 100 |
| Brake pipe excessively corroded | 85 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 41 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 41 |
| Rear brake binding | 40 |
| Brakes imbalanced across an axle | 36 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 30 |
| Front brake disc in such a condition that it is seriously weakened | 25 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 21 |
| Offside Rear Service brake excessively binding (1.2.1 (f)) | 21 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 21 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 20 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 19 |
| Parking brake: efficiency below requirements |3.7.B.7| | 19 |
| Rear Exhaust system not adequately supported |7.1.1| | 18 |
| Parking brake lever has no reserve travel |3.1.6b| | 17 |
| Nearside Stop lamp not working |1.2.1b| | 17 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 16 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 16 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 16 |
| Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) | 15 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 15 |
| Registration plate issues | 14 |
| Nearside Rear wheel bearing rough when rotated |2.6.1| | 14 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 14 |
| Offside Rear wheel bearing rough when rotated |2.6.1| | 13 |
| Rear parking brake recording little or no effort | 12 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 11 |
| Front brake excessively fluctuating | 11 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 11 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 11 |
| Windscreen washer not working | 9 |
| Nearside Rear Rear wheel bearing rough when rotated |2.6.1| | 8 |
| Front brake application uneven | 8 |
| Offside Front Position lamp not working |4.2.1 |a|| | 8 |
| Offside Rear Service brake excessively binding |1.2.1 |f|| | 7 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 7 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 7 |
| Fuel system component leaking |7.2.3| | 6 |
| Offside Stop lamp not working |1.2.1b| | 6 |
| Horn not working |1.6.2a| | 6 |
| Rear Exhaust system insecure (6.1.2 (a)) | 6 |
| Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f)) | 6 |
| Offside Rear Stop lamp not working |1.2.1b| | 6 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 6 |
| Windscreen has damage | 6 |
| Offside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 6 |
| Supplementary restraint system warning lamp indicates a fault |7.1.6 |a|| | 6 |
| Hazard warning switch faulty |1.4.B.1d| | 6 |
| Battery insecure |1.9.1| | 5 |
| Offside Stop lamp(s) not working (4.3.1 (a) (ii)) | 5 |
| Exhaust system not adequately supported |7.1.1| | 5 |
| Exhaust emissions exceed manufacturers specified limit (8.2.2.2 (a)) | 5 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 5 |
| Nearside Rear Wheel bearing rough when rotated |5.1.3 |b| |i|| | 5 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 4 |
| Offside Rear Stop lamp(s) not working (4.3.1 (a) (ii)) | 4 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 4 |
| Nearside Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 4 |
| Nearside Headlamp not working on main beam |1.7.5a| | 4 |
| Rear Mechanical brake component has restricted free movement | 4 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 4 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 4 |
| Nearside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 4 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 4 |
| Hazard warning switch inoperative (4.4.2 (a) (ii)) | 4 |
| Offside Rear Shock absorbers has a serious fluid leak | 4 |
| Nearside Rear Service brake excessively binding |1.2.1 |f|| | 4 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 4 |
| Horn not working |7.7 |a| |ii|| | 4 |
| Offside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 4 |
| Anti-lock braking system warning lamp indicates an ABS fault | 4 |
| Nearside Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 4 |
| Nearside Rear Seat belt anchorage prescribed area strength or continuity significantly reduced sill (7.1.1 (a) (i)) | 3 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 3 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 3 |
| Windscreen wiper blade insecure | 3 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 3 |
| Exhaust emissions exceed level of metered smoke for a turbo charged engine (8.2.2.2 (b)) | 3 |
| Nearside Front Road wheel bead rim badly distorted |4.2.A.1a| | 3 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Nearside Front Anti-roll bar linkage rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 3 |
| Offside Rear Rear wheel bearing rough when rotated |2.6.1| | 3 |
| Front Exhaust system not adequately supported |7.1.1| | 3 |
| Brake hose damaged | 3 |
| Horn not working (7.7 (a)) | 3 |
| Nearside front brake binding |3.7.B.1| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Offside Rear Suspension component mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) | 3 |
| Power steering inoperative |2.3.3a| | 3 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 3 |
| Offside Front Direction indicator not working |1.4.A.2c| | 3 |
| Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 3 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 3 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 3 |
| Exhaust emissions exceed level of metered smoke for a turbo charged engine |8.2.2.2 |b|| | 3 |
| Indicator switch faulty |1.4.A.1| | 3 |
| Exhaust emits excessive smoke or vapour of any colour |7.4.B.4| | 3 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 3 |
| Nearside Front Direction indicator not working |1.4.A.2c| | 3 |
| Offside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 3 |
| Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 3 |
| Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 3 |