Compare BMW 4 Series head gasket repair quotes from specialist garages

Looming hundreds of feet up in Munich's skyline is BMW's headquarters, a vast and impressive building designed to look like four engine cylinders - the configuration that drove much of the brand's early success.

BMW has come a long way since 1927, when it produced its first car, the Dixi, shortly to be renamed the BMW 3/15. In 2022, it was awarded 'Best Manufacturer' at the AutoCar Britain's Best Car Awards, and the same year, it triumphed at the WhatCar? Awards, winning more accolades than any other brand. The M5 special edition, celebrating 20 years of BMW motorsport, is one of the rarest M automobiles in the world.

See how BMW's maintenance prices compare to Audi and Mercedes in this guide.

The head gasket is crucial because it prevents oil and coolant from mixing and seals the internal combustion process. It is under the most pressure of any engine gasket, and it can be expensive when it fails, so it's best to shop around.

Head gasket symptoms to look out for include white or milky oil caused by leaking coolant, white exhaust smoke, loss of power and water or a sweet smell from the exhaust. Blown head gaskets are usually caused by overheating, so keeping your coolant topped up is important. You shouldn't try to drive with a blown head gasket.

A head gasket repair is usually only a temporary fix, especially when you use sealant, and if the damage is too extensive, you may need to book a full head gasket replacement. A cylinder head repair is sometimes required if the head gasket has blown.

A head gasket specialist can advise you on the exact repair your car needs and how much it will cost. Read our complete head gasket replacement guide for more information.