Drivers told to scrap cars with severe MOT corrosion
Drivers told to scrap cars with severe MOT corrosion

Drivers have been advised to scrap their cars if mechanics find severe structural corrosion during an MOT test, as repairs can be costly and may not be financially worthwhile.

Expert advice on structural damage

Andy Turbefield, Head of Quality at Halfords Autocentres, said it “doesn't make sense” to spend money fixing a car if it has this major issue. The specialists revealed that “severe” structural damage, such as corrosion, may not be worth the cost of repairs. Structural corrosion occurs when rust damages key parts of a vehicle, such as the chassis and suspension mounts.

MOT rules and repair costs

MOT tests in the UK require any rust within 30cm of a load-bearing or suspension component to be checked by a mechanic. If the metal is considered weak enough, a car is likely to fail its annual check.

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Speaking exclusively to Express.co.uk, Andy said: “There are some repairs where it simply doesn't make financial sense to fix the vehicle, particularly if it's an older car with a low market value. As a general rule, if the cost of a major repair - such as severe structural corrosion - comes close to or exceeds the value of the car, it's worth considering whether replacing the vehicle is the better option.”

Safety and financial implications

Structural corrosion is a concern because it can compromise the car’s integrity. Frame damage may make the vehicle weaker in an accident, a major safety concern. However, fixing structural corrosion can be expensive, with moderate repairs likely to cost between £400 and £1,000. Extensive damage may cost £1,000 or more, and car insurers might write off vehicles depending on their condition.

It is against the rules not to disclose a write-off or a failed MOT test, meaning road users cannot hide the issue and sell the vehicle.

Further costs to consider

Andy stressed that one expensive repair bill could be a sign of more problems hidden at first glance. He told Express.co.uk: “It's not just the repair bill to think about either; if one expensive fault is a sign of wider wear and tear, you could end up facing further costs down the line. Getting a professional inspection and comparing the repair estimate against the car's current value can help motorists make the most cost-effective decision.”

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