MOT testing is required by law on all vehicles in the UK that are 3 years old or more. The annual inspection follows strict criteria set out by the DVSA that determines if your car is fit for purpose and in roadworthy condition. The MOT test covers a broad range of vehicle safety checks including lights, tyres, seatbelts and emissions and can only be carried out by an MOT garage with DVSA-approved examiners.
During the MOT test the nominated tester, a person accredited by the DVSA to assess your vehicle, will conduct a comprehensive inspection to ensure the vehicle is in roadworthy condition. However, it is not the same as having your vehicle serviced and the MOT test does not check the general mechanical condition of the vehicle. Also, the assessment is based on the condition of the vehicle on the day.
If the vehicle passes, the nominated tester will separately list and inform you of any 'advisory' or 'minor' items that will require attention in the near future so you can keep an eye on them.
If the vehicle fails, you may be entitled to a free re-test.