A new car in the UK will need its first MOT test three years after its initial registration date. This rule applies in England, Scotland, and Wales, while in Northern Ireland, the first MOT is required four years after registration. The MOT test must be done by the third anniversary of the car's registration at the latest, but it can be booked up to one month (minus a day) before this date. After the first MOT, the vehicle must be tested annually to ensure it remains roadworthy and meets safety and environmental standards.