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Cars most likely to fail an MOT - Get a MOT Health Check!

Have you ever wondered what car make or model are most likely to fail an MOT test?

We have rounded up just a few of the worst cars that are most likely to fail their mot test. This post might help you when you're looking for your next car?!

Over 1 million cars fail their MOT test due to silly things such as not enough tyre tread, faulty bulbs, damaged window wipers and even empty windscreen washer fluid.

Let's be honest these are the things you can check yourself before your cars MOT, it will only take you a few minutes?

The worst cars to fail an MOT

The Vauxhall Tigra, this car gas the worst track record for failing an MOT test. This little Vauxhall was marketed as a budget sports car which was manufactured between 2004 and 2009, and figures obtained by DVSA revealed the Tigra didn't pass almost 60% of MOTs taken in 2017 - This Astra look-a-like Vauxhall was the worst!

Also on the list for the worst MOT failers is the Renault Clio, this great little car had its problems. The Clio had a fail rate of 35%, the French hatchback has fail rates that are higher than any other car in its class. Manufactured between 1998 and 2005 the Clio which you'll still spot plenty on UK roads in regular use might be worth side-stepping, the older Renault Clio and Citroen Saxo have more than a one in three chance of failing.

Top 3 Reasons why cars fail an MOT test

#1, Lights and indicators - This is a simple check you can do yourself! #2, Suspension. #3, Breaks.

The BMW 5 Series 1996-2003 generation has the lowest first-time MOT pass rate of all luxury cars, the chances of it failing on average are smaller than models in other classes. The fail rates for this BMW 5 series is over 28% and the number reason for this car to fail its MOT is for breaks and suspension.

Things to remember...

Driving without an MOT will result in either a £100 non-endorsable Fixed Penalty Notice or a Traffic Offence Report. The police force has earned £20.8million from drivers caught at the wheel of a vehicle without a valid MOT certificate, with more than 140 caught every day!

Alderley Autos MOT Health check

Getting a pre-MOT Health Check on your car before the MOT day will avoid the stress of an MOT fail. The MOT Health Checks we do, as we said above, is the same as the MOT Tester will check for, such examples: Steering & Suspension and the parts that make up the Suspension such as, tyres, springs, shock absorbers and linkages that connects a vehicle to its wheels. Lights, Windscreen, Horn, Seatbelts, Brakes. Check the full list below that we have made. You can do some of these pre MOT checks yourself at home.

What’s included in an MOT Test?

The MOT test is carried out to DVSA guidelines and includes a comprehensive inspection of the vehicle to make sure it is in a roadworthy condition. You can also check your car MOT History.

During the MOT test, the tester is not legally required to check if your car has had a cambelt, water pump change. The tester is also not required to check the operation/condition of the clutch.

You can check the condition of your clutch yourself by applying the handbrake and slowly letting the clutch out while in gear. If the car stalls, then generally the clutch is fine.

The MOT Test


Bodywork is the first thing we check. Just like the MOT tester, we check the structure and bodyshell for excessive corrosion or damage in specific areas of the vehicle.

Steering and Suspension

We check the Steering & Suspension and all the parts that make up the suspension which include springs, shock absorbers, control arms and linkages. We look for damaged and/or weak bushes, split rubber boots, including ball joints.


Our checks will include the condition, operation and colour of your car’s lights. If your car lights are faded, we advise that you get them professionally corrected (polished) and only buy brand new ones if this procedure cannot be done.

Wipers and Washers

During the MOT test, this is one of the first things the tester will check. We ensure they operate properly and give the driver a clear view of the road. We also check the level of your washer fluid and top up if necessary.

Windscreen and Mirrors

While checking to see if your Wipers operate properly, we will also check the condition of the Windscreen. We look for any large stone chips and cracks that are in the driver’s viewpoint. The maximum damage size is 10mm in the drivers’ line of vision or 40mm elsewhere.

We check the condition of the mirror glass to make sure there are no cracks and/or discolouring. Discolouring mirror glass we find is quite common on the Mercedes-Benz.

Seats and Seatbelts

We check to see if your front seats are secure. Our checks include the seatbelts. All seatbelts including the rear of the vehicle are checked for type, condition, correct operation and security. We also check to see if your Airbag light isn’t on, and if it is, we can do a diagnostic check to find the problem.


We check to see if all doors open and close correctly and that the latch is secure. Front doors should open from both the inside and outside of the vehicle. We also check the fuel flap to make sure that operates correctly.

Brakes, Wheels and Tyres

We visually check the condition of all brakes, wheels and tyres on your vehicle. Our checks include brake pads, discs, the tread on your tyres and make sure there are no dents in your wheels. Minimum tyre tread depth is 1.6mm.

the bmw 5 series the renault clio the vauxhall tigra

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