Why is it important to get your MOT?

What pre checks are essential for an MOT?

Simple MOT Pre-checks and Replacements


There are plenty of small, quick checks you can carry out before an MOT, which reduce the chances of your car failing for something minor. Here are a few things you should run through before you book yours:


  • Windscreen – check for cracks and chips. Any larger than 40mm on the passenger side, or 10mm on the driver’s side, will cause your car to fail.


  • Windscreen wipers – make sure your wiper blades aren’t splitting, and your windscreen washers aren’t blocked.


  • Lights – ensure that all your car lights are in full working order; if they’re dim, they may need replacement bulbs. This includes headlights, indicators, brake lights, hazard warning lights, fog lights and your vehicle registration light.


  • Engine and fuel oil – it’s important your oil levels are high enough for emissions tests to be carried out. You can measure it by checking that your oil level falls between the min and max marks on your vehicle’s dipstick.


  • Tyres – check that all your tyres are sufficiently inflated, and you’ll need to have tread measuring at least 1.6mm on all four tyres to pass your MOT.


  • Exhaust and Muffler – make sure your exhaust isn’t rattling or emitting fumes which are unusually dark or pungent.


  • Brakes and Pads – check your brakes are working effectively, and your car isn’t leaning to one side when they’re applied – don’t forget to check your handbrake too.


  • All Mirrors – make sure your mirrors are clean, clear and undamaged, as well as securely attached to your vehicle.


  • Dash Lights – check that all the warning lights on your dashboard are properly functioning; you can do this by starting your car.


  • Seatbelts – Check to see all are able to connect and fasten. Any that doesn’t secure the passenger or driver will fail an MOT.


  • Vehicle Horn – your car horn will be tested in your MOT, so don’t forget to try it out before you drop your car off.

Whats included in an MOT

What does an MOT Test include?

While these pre-checks are a smart way to minimise your car’s chances of failing, the MOT test itself will be much more extensive. Checks carried out by the mechanic will usually fall into four standardised categories, which we’ll break down in more detail below. You can find the official government MOT test over on the DVSA website.


  • Interior checks. This category involves checks inside the cabin of your car, including things like your seats and seatbelts, brake controls, steering wheel and speedometer.


  • Exterior checks. This section of your MOT will test several elements on the outside of your vehicle, such as your lights, mirrors, shock absorbers, tyres and the general condition of the body of your car.


  • Under bonnet checks. Unsurprisingly, this part of the MOT focuses on parts of your car under the bonnet, including your braking systems, steering and power steering components, as well as your suspension.


  • Under vehicle checks. Components which fall into this criteria of your MOT include (but are not limited to) your fuel system and fuel tank, wheel bearings, wheels and tyres, plus your exhaust system.


  • Emissions. Finally, there’s the emissions test, which samples the fumes being released by your car’s exhaust, to check the toxicity levels.

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