BMW Head Gasket Repair Cost Guide (2026)

A blown head gasket is one of the more dreaded car repairs, and if you own a BMW, you might be wondering how much it’s going to set you back.

A BMW head gasket repair cost can range from £900 to over £3,000, depending on your individual circumstances.

BMW engines are well-engineered but tightly packed, which means head gasket repairs can be labour-intensive. This guide breaks down the real-world costs in the UK, how long repairs take, and how to spot early signs of trouble before things get expensive.

How much does a BMW head gasket repair cost?

In the UK, the cost of a BMW head gasket repair typically ranges from £900 to over £3,000, depending on the model, engine size and whether additional car damage has occurred.

BMWs tend to be more expensive to repair than the average car because their engines often require longer strip-downs and sometimes specialist parts or machining.

Turbocharged models, for example, are more prone to heat-related gasket issues, and the repair takes longer.

Here’s a breakdown comparing BMW repair costs to the overall UK average in 2026.

No matter the model or issue, you can use car repair finance to split the cost into interest-free repayments.

BMW head gasket repair cost by UK location

Where you live makes a noticeable difference to the final price.

Labour rates can vary by more than £30 per hour across the UK, which adds up quickly during a 10 to 15-hour repair.

Here are some averages. Note that these can still differ within each region.

Are BMW car parts more expensive?

Yes, BMW parts tend to be pricier than the average car. This includes the gaskets, bolts, coolant pipes and sensors that often need replacing during a head gasket job.

Some models, especially diesels and 6-cylinders, use more intricate components, which raise part prices and increase labour time.

Genuine BMW parts are the most expensive, but high-quality OEM alternatives can reduce the cost slightly. Your mechanic or dealership can advise on what’s best for your car.

How long do BMW gaskets last?

A well-maintained BMW head gasket should last 100,000 to 150,000 miles, but failures can occur earlier if the engine overheats.

BMW vehicles are particularly sensitive to cooling system issues, so a small coolant leak or a failing thermostat can quickly lead to gasket damage if ignored.

How long does a BMW head gasket change take?

A typical BMW head gasket replacement takes 10 to 20 hours, depending on the engine layout and whether extra work is needed.

Inline-six engines, like those found in 330i or 530i models, often take longer because the surrounding components are densely packed.

If the cylinder head is warped or cracked, machining or replacement adds extra time, which is why some repairs stretch over several days.

How do I know if my BMW head gasket is blown?

There are a few clear signs that your BMW head gasket needs a repair. Many BMWs will also throw early warnings on the dashboard, including temperature alerts or reduced-power modes, so don’t ignore them.

Common signs of a blown head gasket in a BMW include:

• White smoke from the exhaust

• Loss of coolant with no visible leak

• Overheating, especially on longer drives

• Milky residue under the oil cap

• Rough idle or misfires

• Sweet smell from the exhaust

• Warning lights or "Drivetrain Malfunction" messages

Ways to maintain a BMW headgasket

Whether you need a repair or not, keeping your BMW’s cooling system in good shape is the best way to prevent head gasket failure in the future.

BMWs are engineered to run hot, but they don’t tolerate low coolant or weak pumps. Staying on top of maintenance saves you thousands in repairs.

Here are some other simple habits to remember:

• Check coolant levels regularly

• Use BMW-approved coolant only

• Replace hoses, thermostats and water pumps at recommended intervals

• Fix coolant leaks immediately

• Avoid pushing the engine when cold

• Don’t ignore overheating, even once

Can you drive a BMW with a blown head gasket?

No, driving with a blown head gasket is strongly discouraged. Even short journeys can cause the engine to overheat, warp the cylinder head, or lead to total engine failure.

If your car is showing clear symptoms, arrange recovery rather than driving it to a garage.

Is it worth fixing a BMW head gasket?

In most cases, yes. BMWs tend to hold their value well, and replacing the gasket is far cheaper than letting the engine fail completely.

However, if the car is older, has high mileage, or needs major additional work, the repair can sometimes exceed the vehicle’s value. Get a full quote before making a decision.

Final thoughts

A BMW head gasket repair is a big job, but catching problems early can save you a significant amount of money.

Costs vary widely depending on the engine type, location, and whether any damage has occurred, but staying on top of the cooling system is your best protection against expensive BMW head gasket repair costs!

Split the cost with Bumper

Head gasket repair on the horizon? Consider a car repair loan to split the cost into interest-free repayments.

Apply online for up to £5,000 and choose from 1,000s of trusted repairers.