What's Actually Checked in an MOT? An Ashford Driver's Guide
An MOT check covers over 60 individual points across a car's safety, structure, emissions and lights, but not its general mechanical reliability. An MOT can feel like a mystery you hand over your keys and hope for the best. So here's exactly what a tester checks, what they don't, and the simple things you can do beforehand to avoid an unnecessary fail.
First, the basics
In the UK, your car needs its first MOT when it's 3 years old, and then once every year after that. An MOT checks that your car meets the minimum legal standards for safety and emissions it is not a check of overall mechanical condition or reliability.
Important: driving without a valid MOT can land you a fine of up to £1,000, and your insurance may be invalid. You can be fined even if the car is parked on a public road.
What the tester checks
An MOT covers the parts that keep you and other road users safe, including:
- Lights headlights, brake lights, indicators, hazards and number-plate lights all working and aimed correctly.
- Brakes condition, performance and balance (often the biggest single area).
- Tyres & wheels tread depth (minimum 1.6mm), condition, correct size and no dangerous damage.
- Steering & suspension for wear, play and security.
- Seatbelts all present, secure and working.
- Windscreen, wipers & washers clear view of the road, no large chips in the driver's line of sight.
- Mirrors, horn & number plates present, secure and legible.
- Exhaust & emissions exhaust secure and emissions within limits.
- Body & structure no excessive corrosion or sharp edges in key areas.
What an MOT does NOT check
This catches a lot of people out. An MOT does not assess the condition of your:
- Engine internals, clutch or gearbox
- Oil, coolant and other fluid levels (beyond what's needed to run the test)
- Cambelt / timing belt
That's why a car can pass its MOT and still break down a week later the MOT and a service are two different things. A service looks after the "health" of your car; the MOT just confirms it's road-legal on the day.
The most common reasons cars fail
The good news: many MOT failures are for cheap, easily-avoided faults. The usual culprits are:
- Lighting a blown bulb is one of the top reasons for a fail.
- Tyres worn below 1.6mm or damaged.
- Brakes worn pads or imbalance.
- Driver's view of the road wiper blades worn, washers empty, or a chipped screen.
- Suspension worn components.
5-minute pre-MOT checks you can do
- Walk around with the lights and indicators on replace any blown bulbs.
- Top up your screen-wash and check the wipers don't smear.
- Give the tyres a quick 20p test and check for damage.
- Make sure the number plates are clean and readable.
- Clear the boot and footwells so the tester can reach everything.
Need an MOT in Ashford?
We can arrange your MOT and sort any work it needs all in one place on Feltham Road. Book online or give us a call and we'll look after it.