Written by the MOT Check Now editorial team and checked against GOV.UK and DVSA guidance. Last updated 3 November 2026. Read our editorial policy and how we get our data.
This is the guides library for MOT Check Now. Each guide answers one question UK drivers and used-car buyers ask again and again about the MOT test, and each is written from official rules and not guesswork. Where a number or a penalty appears, it comes from the government’s published guidance. Where a point is not covered by an official source, the guide says so and avoids inventing a figure.
The guides are grouped by what you are trying to do. If you only need a quick answer about one car, start with the free MOT check and come back here to understand what you are looking at.
Costs, dates and the law
- How much an MOT costs: the maximum fee for each vehicle class, what garages can charge below it, what the cap leaves out and how retests are priced.
- How early you can get an MOT: the one month minus one day rule with worked dates, and what you lose by testing too soon.
- Driving without an MOT: the fine of up to £1,000, the exceptions for pre-booked tests and repairs, and what to do if your MOT has lapsed.
- MOT exempt vehicles: which vehicles do not need a test, how the 40-year historic rule works, and why exempt does not mean unchecked.
- Your first MOT: when a new car is first due, and how to get it through without a retest.
Passing, failing and understanding the result
- MOT failure reasons: the areas a tester examines and the checks you can do at home before the test.
- MOT advisories explained: what dangerous, major, minor, advisory and PRS items mean, and when to act on them.
- What to do after a failed MOT: when you can drive away, how repair and retest work, and how to appeal.
Reading history and buying used
- How to read MOT history: a walk through each test record, mileage readings and defect text.
- Used car checklist: the history and in-person checks to make before you pay for a used car.
Getting the paperwork and the test sorted
- MOT certificate: how to get a replacement certificate and what the test number is for.
- MOT near me: how to choose a test centre and what to ask before you book.
- Cancel or rebook an MOT: what happens to your renewal date.
- MOT in Northern Ireland: why the system is different and what it means for checks.
- Number plate guide: age identifiers, legal rules and private plates.
Car care that affects your MOT
- Tyre guide: legal tread depth, sidewall markings and what the MOT checks.
- Car battery guide: types, warning signs and what the MOT covers.
How the guides fit with the free tools
The guides explain, and the tools show you a specific vehicle. A typical journey for a used-car buyer is to run the MOT history for the registration, use how to read MOT history to interpret it, and then work through the used car checklist in person. An owner might check the expiry date, read how early you can get an MOT, then set an alert with the MOT reminder.
Where the information comes from
Guides rely on the government’s own published rules for the MOT test, fees and penalties, and on the fields available in the official DVSA and DVLA vehicle data. The full list of what the free checks show, and what they leave out, is on each tool page. MOT Check Now is an independent service and is not affiliated with DVLA, DVSA or GOV.UK. For anything with legal weight, the government’s pages, such as https://www.gov.uk/getting-an-mot, are the final word. See also our disclaimer and about page.
Start here: MOT basics
- What is an MOT?
- Which MOT class is your vehicle?
- The full MOT inspection checklist
- How to prepare for your MOT
- Dangerous, major, minor and advisory explained
Want to know how we work? Read our editorial policy and how we get our data.