You can schedule an MOT test before the due date, but keep in mind that the new renewal date will be one year (minus one day) from the date the vehicle passed the test. For instance, if your MOT is due to expire on June 20, the earliest possible date to take the test would be May 21. However, if you take your vehicle for the test on May 19 and it passes, the new renewal date will be May 19 of the following year.