How much does it cost to fix a blown head gasket UK?

Head gasket replacement in the UK typically costs £900–£2,500 depending on engine. On older cars worth less than £2,500, it's usually not worth fixing. K-series Rover engines, BMW N47 diesels and PSA 1.6 HDi engines are notorious for head gasket failure and often uneconomic to repair.

Head gasket failure is the diagnosis nobody wants. Here's how to decide whether to fix or scrap.

Will K-Seal or BlueDevil actually fix a blown head gasket? — Sometimes — for very small leaks. Most workshop mechanics see them as a temporary patch to limp a car to scrap. Don't bet long-term reliability on it.

Why is the head gasket so expensive to replace? — It's 6–12 hours of skilled labour to strip the top of the engine, plus the head almost always needs machining.

Bob's Mechanical Repairs — independent family-run garage in Birnam, Dunkeld, Perthshire. Call 01350 727 276 or email [email protected].