🚗 DIESEL OWNERS

There are more diesels on the road today aged between 10 and 25 years old than ever before — and many are still going strong. But one often-overlooked part could turn into a very expensive problem if ignored…

🔥 GLOW PLUGS – SMALL PART, BIG CONSEQUENCES

Glow plugs preheat the combustion chamber to help your engine start in cold conditions.

➡️ On OLDER diesels, they’re used EVERY time you start the car.

➡️ On MODERN engines, they typically only activate in FREEZING conditions (under ~5°C) thanks to advanced injection and compression.

Because they’re used less, they often go untouched for years — until they need replacing… and that’s where things can go wrong.

⚠️ THE RISK OF SNAPPED GLOW PLUGS

Glow plugs can seize in the cylinder head. If one snaps when you try to remove it, and the tip stays lodged in the head, you’re potentially looking at a HEAD-OFF job.
💸 That £20 part just became a £1000+ repair.

🔧 WHAT ABOUT SPECIALISTS?

Yes, there are specialists who can extract snapped glow plugs (and injectors) in situ — saving you from removing the head.
But let’s be real: even that isn’t cheap. It’s a skilled job that still costs hundreds.

🧠 WHAT YOU SHOULD DO

If you’ve got an older diesel and the glow plugs haven’t been changed in YEARS — be realistic:

✅ Sometimes they come out clean.
❌ Sometimes they snap.
💬 Either way, you need to accept the risk beforehand.

Diesels are tough, but age catches up with everything — and issues like glow plugs or stuck injectors can be a real pain and a cost you weren’t prepared for.

PLAN AHEAD. Know the risks. And don’t ignore the warning signs. If the vehicle is older than 10 years or more then expect glow plugs to be a real pain. Sometimes people get a real shock when something simple isn't simple and we feel their pain. But its a reason to do more maintenance as a car gets older not less. If you need a car with a fixed cost, consider leasing a new one under warranty