| Most common failures | No# failures |
|---|
| Service brake: efficiency below requirements |3.7.B.7| | 9 |
| Headlamp aim out of alignment | 4 |
| Brakes imbalanced across an axle | 4 |
| Parking brake: efficiency below requirements |3.7.D.4| | 3 |
| Nearside Stop lamp not working |1.2.1b| | 2 |
| Rear parking brake recording little or no effort | 2 |
| Transmission brake efficiency below requirements |3.8.A.9/10| | 2 |
| Rear Upper Emergency exit sign missing |6.2.D.3| | 2 |
| Nearside Rear reflector missing |1.4.1| | 2 |
| Power steering pump leaking from a failed joint |2.3.3b| | 1 |
| Rear brake application uneven | 1 |
| Offside Rear Stop lamp not working |1.2.1b| | 1 |
| Registration plate lamp issues | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Offside Power steering pipe|s| or hose|s| leaking |2.3.1b| | 1 |
| Offside Front Power steering ram|s| leaking |2.3.1b| | 1 |
| External window obviously not made of safety glass |on or after 1st Jan 1959| |6.11.5| | 1 |
| Rear Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Nearside Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Offside Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Upper Emergency exit sign missing outside |6.2.D.3| | 1 |
| Windscreen wiper not operating over a large enough area to give an adequate view |8.2.1c| | 1 |
| Rear Rear position lamp|s| not working |1.1.A.3b| | 1 |
| Direction indicators adversely affected by the operation of another lamp |1.4.A.2h| | 1 |
| Rear Stop lamp not working |1.2.1b| | 1 |
| Dipswitch operation does not deflect all main beam headlamps to make them dipped beams |1.7.4b| | 1 |
| Offside Lower Emergency exit sign missing |6.2.D.3| | 1 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Nearside Rear Hydraulic brake cylinder leaking hydraulic fluid |3.6.A.1| | 1 |
| Brake operation has insufficient assistance for at least two more brake applications after the warning device has operated |3.3.C.3b| | 1 |
| Offside Upper Brake valve leaking |3.6.A.1| | 1 |
| Offside Front Braking system leaking |3.6.A.1| | 1 |
| Nearside Front Headlamp not in good working order affecting light output |1.2.4a| | 1 |
| Offside Stop lamp not working |1.2.1b| | 1 |
| Nearside Rear Rear position lamp|s| not in good working order |not working| |1.1.4a| | 1 |
| Offside Rear Rear position lamp|s| not in good working order |not working| |1.1.4a| | 1 |
| Brake vacuum build up too slow |3.3.D.6| | 1 |
| Nearside Front front brake binding |3.8.A2a| | 1 |
| Brake operation has insufficient reserve pressure/vacuum to provide assistance for at least two more brake applications after the warning device has operated |3.3.D.5b| | 1 |
| Nearside Front Axle king pin has excessive play in pin and/or bush, adversely affecting the steering |2.5.A.3a| | 1 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 1 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 1 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 1 |
| Glazing/screen/partition missing |6.9.2| | 1 |
| Nearside Rear position lamp|s| obviously incorrectly positioned |1.1.4e| | 1 |
| Nearside Stop lamp obviously incorrectly positioned |1.3.2e| | 1 |
| Centre Exhaust has part of the system excessively deteriorated |6.3.1a| | 1 |
| Exhaust has a major leak of exhaust gases |6.3.2a| | 1 |
| Exhaust has part of the system excessively deteriorated |6.3.1a| | 1 |