Most UK drivers pay £700 to £1,200 for a head gasket repair. Small cars start around £465, family cars run £800 to £1,200, and SUVs or premium vehicles can exceed £1,850.
| Vehicle type | Typical range | What affects it |
|---|---|---|
| Small car | £465–£800 | Simpler engine, less labour |
| Family car | £800–£1,200 | Most common scenario |
| SUV or 4x4 | £1,200–£1,850 | More complex access |
| Premium or performance | £1,500–£2,000 | Can exceed this considerably |
| With head skim or additional damage | £1,500–£3,200 | Only known after strip-down |
Written by Chris Fisher, founder of Clarity-GMS and a working independent garage owner.
A blown head gasket is the repair drivers dread, and often the point at which an older car stops being worth fixing. It is worth understanding what drives the cost, because the decision is rarely just about the gasket itself.
Most drivers pay £700 to £1,200. The spread by vehicle is wide: small cars £465 to £800, family cars £800 to £1,200, SUVs £1,200 to £1,850, and premium or performance vehicles £1,500 to £2,000 and beyond.
Labour is 65% to 70% of the bill. The job takes six to twelve hours because the cylinder head has to come off, which means removing the manifolds, cambelt or chain, and a great deal else besides.
The gasket is a relatively cheap component. What makes this repair expensive and unpredictable is what the garage finds once the head is off.
A blown gasket usually means the engine has overheated. Overheating warps things. If the cylinder head has distorted it needs skimming or replacing, and that is additional cost on top of the quote. Severe cases — warped block, damaged pistons, cracked head — can push the total past £3,000, and occasionally far beyond.
This is why a head gasket quote often comes with a caveat. A garage genuinely cannot know the full extent until they are inside. A quote that sounds suspiciously precise before any strip-down is worth questioning.
White smoke from the exhaust, particularly a sweet smell — coolant burning in the cylinders.
Coolant disappearing with no visible leak underneath.
Mayonnaise-like sludge on the oil filler cap or dipstick — coolant mixing with oil.
Overheating, especially climbing temperature under load.
Bubbles in the expansion tank with the engine running — exhaust gases entering the cooling system.
Rough running or misfire, particularly from cold.
A garage can confirm it fairly quickly with a combustion gas leak test on the coolant, which is inexpensive and worth doing before committing to anything major.
No. This is one of the few repairs where continuing to drive reliably makes things worse.
Coolant in the cylinders and oil contamination cause rapid wear. An overheating engine can go from a gasket job to a complete engine replacement in a single journey. If you suspect a head gasket, stop driving and get it recovered rather than risking it.
The honest question on any car more than about ten years old.
Weigh the repair against the car's value, its condition otherwise, and what else is due. A £1,000 gasket on a car worth £1,500 that also needs a cambelt and two tyres is usually money badly spent. The same repair on a well-maintained car worth £5,000 with fresh MOT is straightforward.
Ask the garage for their honest view on the engine's condition once they have inspected it. Most will tell you plainly if they think you are throwing good money after bad.
Pour-in head gasket sealants are sold widely and occasionally work as a very temporary measure on a minor leak. They can also block radiators, heater matrices and coolant passages, turning a bad situation into a worse one.
If you are selling the car or scrapping it shortly, that is your call. As a repair, it is not one.
Guide prices only. Actual cost varies by vehicle, extent of damage and local labour rates. Get real quotes from local garages for your car.Written by Chris Fisher, founder of Clarity-GMS and a working independent garage owner.
A blown head gasket is the repair drivers dread, and often the point at which an older car stops being worth fixing. It is worth understanding what drives the cost, because the decision is rarely just about the gasket itself.
Most drivers pay £700 to £1,200. The spread by vehicle is wide: small cars £465 to £800, family cars £800 to £1,200, SUVs £1,200 to £1,850, and premium or performance vehicles £1,500 to £2,000 and beyond.
Labour is 65% to 70% of the bill. The job takes six to twelve hours because the cylinder head has to come off, which means removing the manifolds, cambelt or chain, and a great deal else besides.
The gasket is a relatively cheap component. What makes this repair expensive and unpredictable is what the garage finds once the head is off.
A blown gasket usually means the engine has overheated. Overheating warps things. If the cylinder head has distorted it needs skimming or replacing, and that is additional cost on top of the quote. Severe cases — warped block, damaged pistons, cracked head — can push the total past £3,000, and occasionally far beyond.
This is why a head gasket quote often comes with a caveat. A garage genuinely cannot know the full extent until they are inside. A quote that sounds suspiciously precise before any strip-down is worth questioning.
White smoke from the exhaust, particularly a sweet smell — coolant burning in the cylinders.
Coolant disappearing with no visible leak underneath.
Mayonnaise-like sludge on the oil filler cap or dipstick — coolant mixing with oil.
Overheating, especially climbing temperature under load.
Bubbles in the expansion tank with the engine running — exhaust gases entering the cooling system.
Rough running or misfire, particularly from cold.
A garage can confirm it fairly quickly with a combustion gas leak test on the coolant, which is inexpensive and worth doing before committing to anything major.
No. This is one of the few repairs where continuing to drive reliably makes things worse.
Coolant in the cylinders and oil contamination cause rapid wear. An overheating engine can go from a gasket job to a complete engine replacement in a single journey. If you suspect a head gasket, stop driving and get it recovered rather than risking it.
The honest question on any car more than about ten years old.
Weigh the repair against the car's value, its condition otherwise, and what else is due. A £1,000 gasket on a car worth £1,500 that also needs a cambelt and two tyres is usually money badly spent. The same repair on a well-maintained car worth £5,000 with fresh MOT is straightforward.
Ask the garage for their honest view on the engine's condition once they have inspected it. Most will tell you plainly if they think you are throwing good money after bad.
Pour-in head gasket sealants are sold widely and occasionally work as a very temporary measure on a minor leak. They can also block radiators, heater matrices and coolant passages, turning a bad situation into a worse one.
If you are selling the car or scrapping it shortly, that is your call. As a repair, it is not one.
Guide prices only. Actual cost varies by vehicle, extent of damage and local labour rates. Get free quotes from vetted local garages through Fix My Motor — compare and book without ringing around yourself.A blown head gasket is the repair drivers dread, and often the point at which an older car stops being worth fixing. It is worth understanding what drives the cost, because the decision is rarely just about the gasket itself.
Most drivers pay £700 to £1,200. The spread by vehicle is wide: small cars £465 to £800, family cars £800 to £1,200, SUVs £1,200 to £1,850, and premium or performance vehicles £1,500 to £2,000 and beyond.
Labour is 65% to 70% of the bill. The job takes six to twelve hours because the cylinder head has to come off, which means removing the manifolds, cambelt or chain, and a great deal else besides.
The gasket is a relatively cheap component. What makes this repair expensive and unpredictable is what the garage finds once the head is off.
A blown gasket usually means the engine has overheated. Overheating warps things. If the cylinder head has distorted it needs skimming or replacing, and that is additional cost on top of the quote. Severe cases — warped block, damaged pistons, cracked head — can push the total past £3,000, and occasionally far beyond.
This is why a head gasket quote often comes with a caveat. A garage genuinely cannot know the full extent until they are inside. A quote that sounds suspiciously precise before any strip-down is worth questioning.
White smoke from the exhaust, particularly a sweet smell — coolant burning in the cylinders.
Coolant disappearing with no visible leak underneath.
Mayonnaise-like sludge on the oil filler cap or dipstick — coolant mixing with oil.
Overheating, especially climbing temperature under load.
Bubbles in the expansion tank with the engine running — exhaust gases entering the cooling system.
Rough running or misfire, particularly from cold.
A garage can confirm it fairly quickly with a combustion gas leak test on the coolant, which is inexpensive and worth doing before committing to anything major.
No. This is one of the few repairs where continuing to drive reliably makes things worse.
Coolant in the cylinders and oil contamination cause rapid wear. An overheating engine can go from a gasket job to a complete engine replacement in a single journey. If you suspect a head gasket, stop driving and get it recovered rather than risking it.
The honest question on any car more than about ten years old.
Weigh the repair against the car's value, its condition otherwise, and what else is due. A £1,000 gasket on a car worth £1,500 that also needs a cambelt and two tyres is usually money badly spent. The same repair on a well-maintained car worth £5,000 with fresh MOT is straightforward.
Ask the garage for their honest view on the engine's condition once they have inspected it. Most will tell you plainly if they think you are throwing good money after bad.
Pour-in head gasket sealants are sold widely and occasionally work as a very temporary measure on a minor leak. They can also block radiators, heater matrices and coolant passages, turning a bad situation into a worse one.
If you are selling the car or scrapping it shortly, that is your call. As a repair, it is not one.
Guide prices only. Actual cost varies by vehicle, extent of damage and local labour rates. Get free quotes from vetted local garages through Fix My Motor — compare and book without ringing around yourself.A blown head gasket is the repair drivers dread, and often the point at which an older car stops being worth fixing. It is worth understanding what drives the cost, because the decision is rarely just about the gasket itself.
Most drivers pay £700 to £1,200. The spread by vehicle is wide: small cars £465 to £800, family cars £800 to £1,200, SUVs £1,200 to £1,850, and premium or performance vehicles £1,500 to £2,000 and beyond.
Labour is 65% to 70% of the bill. The job takes six to twelve hours because the cylinder head has to come off, which means removing the manifolds, cambelt or chain, and a great deal else besides.
The gasket is a relatively cheap component. What makes this repair expensive and unpredictable is what the garage finds once the head is off.
A blown gasket usually means the engine has overheated. Overheating warps things. If the cylinder head has distorted it needs skimming or replacing, and that is additional cost on top of the quote. Severe cases — warped block, damaged pistons, cracked head — can push the total past £3,000, and occasionally far beyond.
This is why a head gasket quote often comes with a caveat. A garage genuinely cannot know the full extent until they are inside. A quote that sounds suspiciously precise before any strip-down is worth questioning.
White smoke from the exhaust, particularly a sweet smell — coolant burning in the cylinders.
Coolant disappearing with no visible leak underneath.
Mayonnaise-like sludge on the oil filler cap or dipstick — coolant mixing with oil.
Overheating, especially climbing temperature under load.
Bubbles in the expansion tank with the engine running — exhaust gases entering the cooling system.
Rough running or misfire, particularly from cold.
A garage can confirm it fairly quickly with a combustion gas leak test on the coolant, which is inexpensive and worth doing before committing to anything major.
No. This is one of the few repairs where continuing to drive reliably makes things worse.
Coolant in the cylinders and oil contamination cause rapid wear. An overheating engine can go from a gasket job to a complete engine replacement in a single journey. If you suspect a head gasket, stop driving and get it recovered rather than risking it.
The honest question on any car more than about ten years old.
Weigh the repair against the car's value, its condition otherwise, and what else is due. A £1,000 gasket on a car worth £1,500 that also needs a cambelt and two tyres is usually money badly spent. The same repair on a well-maintained car worth £5,000 with fresh MOT is straightforward.
Ask the garage for their honest view on the engine's condition once they have inspected it. Most will tell you plainly if they think you are throwing good money after bad.
Pour-in head gasket sealants are sold widely and occasionally work as a very temporary measure on a minor leak. They can also block radiators, heater matrices and coolant passages, turning a bad situation into a worse one.
If you are selling the car or scrapping it shortly, that is your call. As a repair, it is not one.
Guide prices only. Actual cost varies by vehicle, extent of damage and local labour rates. Get real quotes from local garages for your car.
Last reviewed: 2026-07-30
Common signs are white sweet-smelling exhaust smoke, coolant disappearing with no visible leak, mayonnaise-like sludge on the oil cap, overheating, and bubbles in the expansion tank. A garage can confirm with an inexpensive combustion gas leak test.
No. Coolant entering the cylinders and oil contamination cause rapid engine wear, and continued overheating can turn a gasket repair into a full engine replacement. Have the car recovered rather than driven.
Because the full extent is only visible once the cylinder head is off. A blown gasket usually follows overheating, which can warp the head or block. Skimming or replacing the head adds cost that cannot be assessed beforehand.
Occasionally as a very short-term measure on a minor leak, but they can block radiators and coolant passages and make matters worse. They are not a repair.
Weigh the repair cost against the car's value and what else is due. A £1,000 repair on a car worth £1,500 that also needs other work is rarely sensible. Ask the garage for their honest assessment of the engine's condition.