Owners of older cars in Perth who have just been told their head gasket has failed face a practical question: is the repair worth paying for, or is the car worth more sold as it is? Warning signs include white exhaust smoke, coolant that vanishes without a visible leak, a milky film in the oil, and an engine that runs hot and loses power. The decision matters most for vehicles with high kilometres, an aging engine, or other existing problems. In those cases the repair cost can outrun what the car is worth.
The repair means removing the cylinder head, checking it for warping, machining it flat if needed, and reassembling the engine with new gaskets, seals, and often new head bolts. Most of the cost is labour rather than parts, and a written quote from a mechanic is the sensible starting point. Overheating can also leave a warped or cracked head or coolant mixed into the oil, so the final bill can end up well above the first estimate. If the repair would cost more than the car is worth afterwards, selling as is becomes the better option. A wrecker's offer depends on the make and model, overall condition, completeness, weight and metal content, and whether the car runs. In Western Australia, the seller keeps the number plates, must lodge a Notification of Disposal with the Department of Transport, and needs valid photo ID.
A blown head gasket does not by itself make a car worthless, since even a dead engine leaves a vehicle with value for parts and recycling. What matters is how the repair cost, the chance of further damage, and the car's age and condition add up against its worth once running again. If the numbers do not favour repair, selling as is spares the owner a bill that the car's resale value would never recover. Getting a written repair quote and a no-obligation offer from a buyer lets the owner compare both figures before committing.

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