What to Expect During an MOT Test in the UK: A Step-by-Step Guide
If your car is more than three years old, you’re legally required to get an MOT test every year. But what actually happens during the test? And how can you make sure your vehicle passes first time?
Whether it’s your first MOT or just your first time thinking about it, this guide walks you through exactly what to expect during the process — including what’s checked, how long it takes, and how to avoid common fails.
What Is an MOT Test?
An MOT (Ministry of Transport) test is a legally required annual inspection that checks whether your car is safe, roadworthy, and meets environmental standards set by the DVSA.
You must get an MOT every year once your vehicle is over 3 years old (4 years in Northern Ireland). Driving without one can result in fines and invalidate your insurance.
How Long Does an MOT Take?
Most MOT tests take 45 minutes to 1 hour. However, this can take longer if:
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The garage is busy
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Your car fails and needs minor repairs on the spot
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You're also booking a service at the same time
You can wait at the garage, leave the car and return later, or book a collection and drop-off if offered.
What Does the MOT Test Check?
Here’s what the garage will inspect during your MOT:
🔧 Safety Features
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Brakes (including pedal condition and performance)
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Seatbelts (functionality and wear)
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Horn (must be loud and working)
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Steering and suspension
💡 Lights and Visibility
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Headlights, brake lights, indicators (including alignment)
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Windscreen (for chips or cracks)
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Wipers and washers (must clean glass properly)
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Mirrors (secure and damage-free)
🛞 Tyres and Wheels
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Tread depth (must be at least 1.6mm)
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Condition (no bulges, cuts or cord exposed)
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Wheel nuts and general wear
🌍 Emissions and Environment
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Exhaust system
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Emissions levels
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Fuel cap and leaks
📋 Other Essentials
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Registration plates (correct format and visible)
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VIN (Vehicle Identification Number) visibility
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Doors and locks (must open and close properly)
What’s Not Included in an MOT?
The MOT doesn’t check:
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Engine condition
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Clutch performance
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Gearbox operation
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Oil and coolant levels
For these, you’ll need a car service — which is why many drivers book their MOT and service together.
What Happens If You Pass?
You’ll receive a pass certificate (VT20) — either printed or digital.
You may still get advisories, which highlight issues that could become problems later (like worn tyres or slight corrosion).
Advisories are not failures, but they’re worth keeping an eye on.
What Happens If You Fail?
If your vehicle fails, you’ll get a refusal certificate (VT30) listing the issues that need fixing.
You can:
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Leave the car at the garage for repairs
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Take it away for repairs elsewhere (but only drive it to/from a pre-booked appointment)
Most garages offer a free retest within 10 working days, especially if they do the repair work.
How to Prepare for Your MOT (and Avoid a Fail)
You can avoid many common failures with a quick DIY check before your test:
✅ Pre-MOT Checklist:
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Check all lights are working
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Top up screenwash
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Make sure wipers are intact
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Check tyre tread depth and inflation
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Remove clutter that blocks mirrors or windows
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Ensure number plates are clean and legible
FAQs About MOT Tests in the UK
How early can I book an MOT?
You can book it up to 1 month (minus a day) before your current MOT expires and keep the same renewal date.
Can I drive without an MOT?
Only if you’re on your way to a pre-booked MOT test — otherwise it’s illegal and could invalidate your insurance.
How do I check my MOT expiry date?
Use the GOV.uk MOT checker by entering your registration number.
Do electric vehicles need an MOT?
Yes — even EVs must be tested for things like brakes, tyres, and lights, just like petrol or diesel cars.
Will I be charged for a retest?
If you leave your car at the same garage, most offer a free retest within 10 working days. Ask before booking.
Final Thoughts
An MOT test isn’t just a legal tick box — it’s a crucial step in making sure your car is safe for you, your passengers, and other road users.
Knowing what’s included and how to prepare means you’re far more likely to pass first time, avoid last-minute surprises, and stay on the road without interruption.
For even more peace of mind, consider booking your MOT and car service together to stay fully road-ready all year.
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