MOT test: what it is, what it covers, and how to get it done

If your car is over three years old, it needs an annual MOT to be legally driven on public roads. The test covers a specific list of safety and emissions items. It does not check the full mechanical condition of the vehicle. A car can pass its MOT and still need significant repairs. That is by design: the MOT sets a minimum safety threshold, not a general health check.

Every authorised test centre follows the same DVSA checklist. The test you get at a supermarket forecourt is identical to the one at a main dealer.

Your MOT expiry date is based on the anniversary of your first MOT, not your car's registration date. These are sometimes different, which catches people out. You can check your current expiry date free at any time using the DVSA vehicle enquiry service at GOV.UK.

The DVSA publishes the full testing manual, but here is what the tester is looking at across each category.

Lights. Headlights, brake lights, indicators, hazard lights, and the registration plate light. They must work correctly and be properly aligned.

Brakes. Brake pads, discs, and the handbrake. The tester checks condition and performance. Brake fluid is visually checked.

Tyres. Tread depth must be at least 1.6mm across the central three-quarters of the tyre width. Condition and any obvious damage are checked. Tyre pressure is noted but is not a pass or fail item.

Steering and suspension. Steering wheel play, suspension condition, and wheel bearings. Excessive movement in any of these is a fail.

Seatbelts. Every belt must be in good condition, operate correctly, and be properly anchored. A belt that retracts sluggishly or fails to lock under force will fail.

Emissions. Petrol and diesel vehicles are tested differently. A catalytic converter that has been removed or tampered with is an automatic fail.

Windscreen and wipers. The screen must be free of damage in the driver's field of view. Wipers must clear the screen properly. Washer fluid is checked.

Horn. It must work. That is all the tester needs to know.

Bodywork. No sharp edges or projections that could injure someone. No excessive corrosion in structural areas such as floor pan, sill, or chassis.

Mirrors. All required mirrors must be present, unobstructed, and properly positioned.

Number plates. Must be present, legible, correctly lit, and in the correct format.

At the end of the test, the tester assigns one of four possible outcomes. The difference between them matters more than most people realise.

The government sets a maximum fee for a car MOT of £54.85. Garages cannot charge more than this. There is no minimum fee, so many charge less.

A cheaper MOT does not mean a worse test. The DVSA testing standards are the same at every authorised centre. Every tester follows the same checklist. A £30 MOT at a supermarket garage uses identical criteria to a £54 MOT at a main dealer.

Supermarket forecourt garages, fast-fit chains, and independent garages all compete on price. Shopping around makes sense. The one thing worth watching: garages that offer unusually cheap MOTs sometimes offset this with aggressive recommendations for repairs that may not be necessary. Checking reviews before booking is worth two minutes of your time.

The £54.85 figure is the current maximum as of June 2026. For the up-to-date figure, check the GOV.UK page on MOT fees.

Any DVSA-authorised test centre can carry out your MOT. You do not have to use a main dealer or the garage you normally service with.

Before booking, check when your current MOT expires. The DVSA vehicle enquiry service at GOV.UK shows it in seconds. Just enter your registration.

To find a test centre near you, use the GOV.UK garage finder. Most have online booking. You can also call ahead.

If your vehicle fails, the garage issues a VT30, a refusal of MOT certificate. You cannot legally drive the vehicle on public roads in its current condition, except to drive directly to a pre-booked repair appointment or back to your garage to have the failure items fixed.

You are not required to have the repairs done at the same garage that failed the vehicle. The tester cannot pressure you to use their repair service.

Once repaired, the vehicle must be retested. If the retest happens within 10 working days at the same garage, you pay a reduced retest fee. If you go elsewhere or wait longer than 10 working days, you pay the full MOT fee again.

The most common fail reasons are tyre tread depth, lights not working, worn brake pads, windscreen damage, and emissions. These are also among the cheapest things to fix in advance of a test.

If you believe the tester wrongly failed your vehicle, you can apply for an appeal at a DVSA-supervised test centre. The key condition: no remedial work must have been done on the alleged defect before the appeal test. Once you fix the item, the basis for appeal is gone.

If the appeal finds in your favour, the appeal fee is refunded.

Appeals are relatively rare. Most disputes are better resolved by taking the vehicle to a second test centre for an independent assessment before booking an appeal.

The DVSA provides free access to every vehicle's MOT history going back to 2005. You can check any vehicle's test record, not just your own.

The history shows every pass and fail since 2005, the mileage recorded at each test, any advisory items noted, and the specific reasons for any failures. This is particularly useful if you are buying a used car. Mileage consistency, recurring advisories, and previous serious failures are all visible.

The MOT history is one of the first things to check on any used car. It is not a substitute for a full vehicle history check, but it is free and takes 30 seconds.