I’ve been a mechanic for 50 years, here’s one of the most common car repair scams

When you’ve spent half a century under the bonnet of everything from rusty old runarounds to high-end saloons, you learn a thing or two — including how often drivers get taken for a ride. One of the oldest and most frustrating tricks in the book? Charging for oil leak repairs that simply don’t need doing.

The oily scam that keeps resurfacing

Here’s the setup: you take your car in for a routine check — maybe a service or a quick inspection — and the mechanic returns with a grave look and a smudge of oil on his glove. “You’ve got an oil leak,” he warns. “We’ll need to replace some gaskets, maybe strip the engine down… could be £800, maybe more.”

Sounds serious, doesn’t it? But here’s what they don’t always say: that small smear of oil might not be doing any harm at all.

Over the years, many seasoned mechanics have seen this scam play out again and again. A bit of oil on the engine block, especially in older cars, is pretty normal. Engines aren’t built in laboratories — they breathe, they heat up, they cool down. And over time, a bit of oil seepage happens. It’s not ideal, but it’s hardly a crisis.

When an oil leak is actually a problem

Now, let’s be fair. Some oil leaks do need fixing. If oil is dripping onto electrical components like your alternator, it’s a different story. That’s when you could end up with a breakdown, and ignoring it might cost you more down the line.

But if there’s no puddle under the car, the alternator’s bone dry, and your dashboard isn’t lit up like a Christmas tree — there’s a good chance your engine’s just showing its age, not crying for surgery.

The best advice? Check it yourself. Look underneath the car — is there oil on the floor? No? Then it might not be urgent. Still unsure? Get a second opinion. Honest mechanics don’t mind you double-checking — the dodgy ones do.

Why this scam keeps working

It plays on fear. No one wants their car breaking down halfway through the school run or on the motorway. And unless you’ve got a background in car maintenance, it’s easy to feel overwhelmed. Mechanics know this — and some take advantage.

That’s why knowing the basics helps. You don’t need to be a gearhead, but understanding a few warning signs and trusting your instincts can save you hundreds in unnecessary repairs.

How to protect yourself

• Ask to see the leak for yourself. If there’s no active drip, be sceptical.

• Request photos of the affected parts before any work is done.

• Get a second opinion, especially if the quote feels steep.

• Know your car’s age and quirks — older engines often look worse than they are.

• Stick with trusted garages, ideally ones recommended by someone you know.

In the end, cars are machines. They wear, they whir, they age — but they don’t always need fixing just because they’re not spotless. A bit of grime and oil doesn’t mean disaster. And if someone’s quoting a four-figure sum without clear evidence? It might be time to take your car — and your wallet — elsewhere.

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David Miller

David Miller is an entertainment expert with a passion for film, music, and series. With eight years in cultural criticism, he takes you behind the scenes of productions and studios. His energetic style guides you to the next big releases and trending sensations.