M.O.T. stands for Ministry Of Transport.
All UK cars that are 3 years old and over require a valid MOT certificate by law.
The MOT scheme is a road safety measure designed to ensure that all cars, motorcycles and light goods vehicles more than 3 years old are properly maintained and safe.
At least once a year a vehicle must be examined at an authorised test station to make sure that they comply with certain important requirements of the law.