Preparing for an MOT
A practical checklist for drivers before an MOT — simple checks that prevent fails on lights, tyres, wipers and other easy fixes.
Last updated 6 July 2026 · 5 min read
Part of our guide to How to Choose a Garage
Check your lights
Blown bulbs are one of the most common MOT failures — and one of the cheapest to fix beforehand. Check headlights (main and dipped), sidelights, brake lights, indicators, fog lights and number plate lights. Ask someone to help or reverse close to a wall to see reflections.
Tyres and wheels
- Minimum legal tread depth is 1.6 mm across the central three-quarters of the tyre
- Check for cuts, bulges or uneven wear
- Ensure all tyres are the same size on each axle
- Wheel nuts must be secure; no seriously damaged alloys
Windscreen, wipers and washers
Cracks in the driver's line of sight can fail an MOT. Wipers must clear the screen effectively — replace worn blades (they are inexpensive). Top up washer fluid and check the jets spray properly.
Other quick checks
- Horn works
- Seatbelts click in and retract
- Mirrors are secure and give a clear view
- Registration plates are clean, legible and securely fitted
- Remove heavy clutter from the boot — testers need access to the spare wheel or repair kit on some vehicles
On the day
Arrive with enough fuel for the emissions test. The test usually takes 45–60 minutes. If the car fails, the garage should explain why and quote for repairs before doing any work — see understanding garage quotes. For the full picture on what the test covers, read MOT explained. Choose your testing station with how to choose a garage.
Frequently asked questions
- Can I MOT my car early?
- Yes. You can book an MOT up to one month before your current certificate expires and keep the same renewal date. Many drivers book two to four weeks ahead to secure a convenient slot.
- What documents do I need for an MOT?
- Usually just the vehicle. The V5C logbook is helpful but not required. The tester can look up your MOT history from your registration number.
- Should I wash my car before an MOT?
- A clean car is not required, but clean registration plates, working washers and a clear windscreen help. Testers need to read your plates and see through the screen.
Related guides
MOT Explained
What the MOT test is, what it checks, when yours is due and what pass, fail and advisory mean for UK drivers.
How to Choose a Garage
A plain-English guide for drivers on what to look for when choosing a garage — qualifications, reviews, pricing and red flags.
Questions to Ask Before Booking
The questions every driver should ask a garage before booking — pricing, parts, warranties and what happens if something goes wrong.
Understanding Garage Quotes
How to read a garage quote or estimate — labour, parts, VAT, extras and what to do if the final bill is higher than expected.
Signs Your Car Needs a Service
Warning signs that your car needs a service soon — dashboard lights, unusual noises, poor performance and when to book without waiting.
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