The Most Common MOT Failures | Cocoon Vehicles

The Most Common MOT Failures

The most common MOT failures

We all know that feeling of dread when it comes to taking the car in for a MOT, waiting patiently for the call from the garage with our fingers firmly crossed.


Well worry no more, below we give you the details of the most common MOT fails as well as how you can avoid them. You’re welcome.


Check your Lights


18% of MOT failures are down to not having checked the light beforehand. Ensure they’re all fully working by having someone assist you walking around the car whilst you test every light including indicators and hazards. If you find any aren’t working, replace the bulb before the MOT.




Although difficult to check this one you can see if any shock absorbers aren’t working correctly by applying weight to each corner of the vehicle and see whether or not it springs back quickly.




If you find that your brakes aren’t as responsive as they once was or your handbrake slides up without resistance you may have a problem. Get this checked out with a mechanic for your own safety as well as in hope of passing the MOT




There are 2 parts to checking the tyres, 1 the tread of the tyres and the other the pressure. 7% of all MOT test failures are down to problems with tyres.


With tyre pressure you can simply check what the correct pressure should be and if needed you can fill them at a local petrol station.


The tyre tread legal minimum is 1.6mm for a car tyre. There’s a quick check you can do to test if it is above the legal minimum with a 20p piece. Simply slip the 20p into the main grooves of the tyre tread, if the outer rim of the coin is hidden your tyres should be above the legal limit, if not, it’s time to get them replaced.


Windscreen & Wipers


If there’s no damage there’s no problem however 7% of MOT’s are failed due to damage on the windscreen. If there is damage more than 10mm across in the driver’s central view you will need to get this fixed asap.


Easy to forget about the windscreen wipers but these need to be in good working order and need to be able to clear the windscreen in conjunction with the washers.




You’ll need to do a quick test to ensure that the exhaust isn’t leaking. Start the engine and from the rear of the car listen for any unusual noises or smoking from the car, these can indicate a leak and should be fixed before the MOT. 4% of MOT failures are due to this reason.




How is your steering working? Are you sure it’s as responsive as it used to be or should be? Have you discovered any issues with the steering? Have you had any warning lights come on? If so, it might be time to get it looked at before you book in for your MOT.


Lastly, check that all your fluids are topped up, make sure there are no broken wing mirrors, all the seatbelts work correctly and the car is fully functioning. Keep these points in mind any hopefully you’ll sail through that next MOT.


Cocoon Vehicles are specialist in vehicle leasing and car sourcing. Whether you’re after a short-term lease, a lease that is longer term or you’re looking at buying a vehicle, get in touch! You can call us on 01332 290173 or complete the form below and we will be in touch as soon as we can.


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