Ministry of Transport test; an annual test of roadworthiness for British cars over three years old
See also.
In Britain, an MOT is a test which, by law, must be made each year on all road vehicles that are more than 3 years old, in order to check that they are safe to drive. My car is due for its MOT in two days' time. A witty or incisive remark. a test in Britain that all cars more than three years old must pass every year in order to show that they are still safe to be driven