When it comes to an MOT test, most people dread it. It feels like one of those things where you drop your car off, cross your fingers, and just hope for the best. The truth is, a lot of the reasons cars fail their MOT are actually quite simple and could be sorted out before the test. We see it all the time here in Medway, cars coming in for their MOT, failing on something small, and then the owner is stuck with the hassle of fixing it and re-booking. It’s annoying, it’s costly, and most of the time it’s usually avoidable.

In this article we will walk you through the most common MOT failures we see and what you can do to stop them happening to you.

Lights and Signalling Issues

By far one of the most common MOT failures. A blown bulb, an indicator, even number plate lights get picked up on the test. It sounds silly, but something as tiny as that can make your car fail.

How to avoid it: Before your MOT in Medway, have a quick check of every light. Walk round the car, press the brake pedal (get someone to help if you can), try the indicators, headlights, fog lights. It only takes a couple of minutes. Bulbs don’t cost much either, so don’t give the MOT tester an easy fail for the sake of a £5 fix.

Tyres and Tread Depth

Tyres are another big one. If the tread is too low, it’s essentially a straight fail. Legally it’s 1.6mm, but if they’re close to that line, you’re asking for trouble. We also see tyres with bulges or damage, which is just as bad.

How to avoid it: Do the 20p test. Stick a 20p coin in the tread groove, if you can see the outer rim of the coin, the tyre is too worn. Simple as that. Also, keep an eye out for cracks or bald patches. If you’re not sure, we can check them for you when you come in for servicing.

Brakes and Brake Pads

Brakes are one of those things you don’t notice until they get really bad. But for the MOT, worn pads, discs, or even a dodgy handbrake will fail you right away.

How to avoid it: Pay attention when you’re driving. If you hear squeaks, grinding noises, or if the car takes longer to stop than it used to, that’s your sign. If the brake pedal feels soft or spongy, get it looked at. Regular servicing helps too because we’ll catch those problems before the MOT does.

Windscreen and Wipers

This one always catches people out. A chip or crack in the windscreen, especially in the driver’s line of sight, can be a fail. Same goes for wipers that don’t clear the screen properly.

How to avoid it: Look at your windscreen before the test. Any cracks or chips? Get them sorted sooner rather than later because repairs are cheaper than replacements. Swap the wiper blades if they’re leaving smears or squeaking. And don’t forget to top up your screen wash, as that’s on the MOT checklist too.

Suspension Problems

Medway roads aren’t exactly smooth, and the potholes don’t do your suspension any favours. We often see broken springs or worn-out shock absorbers causing MOT failures.

How to avoid it: If your car feels bouncy, makes clunks over bumps, or just doesn’t handle the way it used to, it’s worth getting it checked. Suspension issues get worse if you ignore them, so spotting it early is better for your car and your wallet.

Exhaust and Emissions

If your exhaust is blowing, leaking, or your emissions are too high, the car will fail. It’s another big reason for MOT failures.

How to avoid it: Keep an ear out, if your car suddenly sounds louder than normal, it could be the exhaust. Unusual smells from the exhaust are also a bad sign. Regular servicing helps here too because we’ll spot problems before they show up on the MOT test.

How to Prepare for Your MOT

Most MOT failures are for little things. If drivers checked their cars before the test, half of these fails wouldn’t happen. Here’s a quick checklist to run through:

• All lights working (don’t forget the number plate bulbs)
  
• Tyres have enough tread and no visible damage
  
• Windscreen clear, wipers working, screen wash topped up
  
• Brakes feel strong and not making noises
  
• No strange knocks or rattles from suspension
  

It’s not complicated, but it makes a big difference.

Final Thoughts

Failing an MOT isn’t just about the fail certificate, it means extra hassle, extra costs, and being stuck without a car until it’s fixed. Most of the common MOT failures we see at Medway Vehicle Services can be avoided with a few simple checks and a bit of regular servicing.

If your MOT in Kent is coming up, don’t leave it to chance. Pop in and we’ll help get your car ready so it passes the first time. It’s less stress for you and it keeps your car safe on the road.