More than 34% of cars and vans in Great Britain initially failed the MOT test, according to the latest figures from the Driver and Vehicle Standards Agency (DVSA)*. The failed vehicles had an average of three faults.
The figures, taken over the course of a year, found that just four areas were to blame for most of the problems found by MOT testers.
Lighting and signalling were the biggest issues, causing 30% of defects. This was followed by suspension (20%), brakes (17%) and tyres (10%).
Keep reading to find out what you can do to help your car pass its MOT test.
More than 7.5m cars and vans taken for an MOT in the 2017-18 tax year failed the test completely.
A further 2.4 million initially failed because of minor issues that the mechanic could fix at the time, such as re-aligning headlights or topping up windscreen washer fluid.
This meant the vehicle could then pass without needing a retest, known as a 'PRS' (pass with rectification at the MOT test station).
Many issues that cause a car to fail the test, particularly those in the PRS category, can be spotted and corrected before you take your car in, such as taking a few minutes to check your lights before you book your car's MOT.
You also need to make sure your oil is topped up, as you may be turned away if it's too low to complete the emissions test.
The good news for motorists is that the MOT failure rate for cars and vans is decreasing. It dropped from 40% in 2013-14 to just 34.5% in 2017-18.
This is despite a rise in the amount of vehicles being tested, from 27.5m to 28.9m, over the same time period.
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