Head gasket repair cost UK
fitted at an independent garage · parts, machining and labour included
- Diagnosis first £50–£100
- Typical time 6–12 h
- Dealer +50%
A head gasket replacement costs £500–£1,500 at an independent garage, depending on the engine. The gasket itself is £30–£100 — almost the entire bill is 6–12 hours of labour, plus skimming the head and new bolts. A proper diagnosis (block and pressure test) costs £50–£100 and should always come first: on older cars the repair can exceed the car’s value, so confirm before you commit. Use the calculator, then compare live quotes.
Estimates for a typical example of each model, assuming the head skims true. A warped or cracked head adds £300–£800 — see below. Final quotes come from garages — we may earn a commission when you book through our partners, at no cost to you.
Head gasket repair cost by make and model
Prices below are for an independent garage — gasket set, new head bolts, a standard head skim, fluids and labour included. The spread within each range mostly reflects engine variants: a small single-cam petrol sits at the bottom, a twin-cam turbo diesel at the top. Where a model name is a link, it has its own page covering which engines are affected, what imitates a gasket failure on that car, and what to ask before agreeing to the work.
| Car | Head gasket, fitted | Diagnosis | Typical time |
|---|---|---|---|
| Ford Fiesta | £500–£900 | £50–£90 | 6–9 h |
| Ford Focus | £550–£1,000 | £50–£90 | 7–10 h |
| Vauxhall Corsa | £500–£900 | £50–£90 | 6–9 h |
| Vauxhall Astra | £550–£1,000 | £50–£90 | 7–10 h |
| Volkswagen Golf | £600–£1,050 | £50–£100 | 7–10 h |
| Volkswagen Polo | £550–£950 | £50–£90 | 6–9 h |
| Nissan Qashqai | £600–£1,100 | £50–£100 | 7–11 h |
| Nissan Juke | £580–£1,050 | £50–£100 | 7–10 h |
| Mercedes A-Class | £750–£1,350 | £60–£100 | 8–12 h |
| BMW 1 Series | £750–£1,350 | £60–£100 | 8–12 h |
| BMW 3 Series | £800–£1,500 | £60–£100 | 8–12 h |
| Audi A3 | £700–£1,300 | £50–£100 | 8–11 h |
| Honda Civic | £600–£1,100 | £50–£100 | 7–10 h |
| Toyota Yaris | £500–£950 | £50–£90 | 6–9 h |
| Kia Sportage | £650–£1,200 | £50–£100 | 7–11 h |
Estimates for independent garages, assuming the head skims within tolerance. Main dealers typically charge around 50% more. Final quotes come from garages.
What affects the price of a head gasket repair
It’s a labour job wearing a parts-job name. The gasket costs £30–£100. Reaching it means removing everything above it — inlet and exhaust manifolds, timing drive, ancillaries — then rebuilding it all to torque spec. That’s 6–12 hours, and it’s why the same £60 gasket costs £900 more to fit on some engines.
What the machine shop finds sets the final bill. A head that’s overheated is usually slightly warped; a standard skim (£60–£120) trues it and is built into our estimates. A head warped beyond skimming tolerance, or cracked, means a reconditioned or replacement head — add £300–£800, and on some engines that’s the point where the conversation changes to whether to fix at all.
The cause has to be fixed too. Head gaskets rarely fail unprovoked — overheating from a stuck thermostat, failed fan or leaking radiator is the usual killer. A quote that doesn’t address the cause is a quote for the same failure twice. On belt-driven engines there’s a silver lining: the cambelt comes off anyway, so a new belt kit costs only its parts — the one genuine bargain in this repair.
What’s included in a head gasket replacement
A proper job fits a full head set — the head gasket plus every gasket and seal disturbed on the way (rocker cover, manifolds, cam seals) — and new head bolts, which are single-use stretch bolts. The head goes to a machine shop for a pressure test (finds cracks) and a skim (restores a true surface). The engine is refilled with fresh coolant and oil, because both are contaminated by definition, and the thermostat is usually renewed as cheap insurance against the original cause.
| Head set (Elring/Payen) + new head bolts | £155 |
| Machine shop: pressure test + skim | £80 |
| Labour — 8 h × £65 (independent garage) | £520 |
| Coolant, oil, filter, thermostat | £65 |
| Typical total | ≈ £820 |
Sits inside the £550–£1,000 range in the table above — and shows the shape of every head gasket bill: parts £300, labour £520. If the machine shop condemns the head, a reconditioned unit moves the total to £1,200–£1,500.
6 symptoms of a failing head gasket
The head gasket seals three things from each other — combustion, coolant and oil — so its symptoms are those three mixing. The order you catch them in decides the bill: early symptoms mean a gasket, late ones mean a gasket plus whatever the overheating warped.
- Losing coolant with no visible leak
The level drops week after week but the drive, hoses and radiator are dry — the coolant is going into the cylinders and out of the exhaust.
Cost signal: the classic early catch. A £50–£100 block test now settles it while it’s still a gasket-only job. - White sweet-smelling smoke from the exhaust
Persistent white steam that doesn’t clear when the engine warms, often with a sweet antifreeze smell — coolant burning in the cylinders.
Cost signal: past the subtle stage. Stop topping up and driving; every heat cycle risks warping the head. - Mayonnaise under the oil filler cap
A creamy emulsion means water in the oil. Caveat: short-journey cars build harmless condensation mayo — judge it together with the other symptoms, not alone.
Cost signal: with coolant loss or overheating alongside, test immediately. Alone on a school-run car, take a motorway run first. - Bubbles in the expansion tank
Engine running, cap off (cold!): a steady stream of bubbles or the coolant surging means combustion gas is being pushed into the cooling system.
Cost signal: this is what the block test confirms chemically — combustion gas in the coolant is the smoking gun. - Overheating — especially repeatedly
The gauge climbing, particularly after the first overheat “fixed itself”. Overheating is both cause and effect: it blows gaskets, and blown gaskets overheat engines.
Cost signal: the expensive symptom. Each overheat risks turning a £600 gasket into a £1,400 gasket-plus-head. Stop driving. - Rough running or misfire on cold start
Coolant seeping into a cylinder overnight fouls the plug — a shaky first thirty seconds that clears as it burns off.
Cost signal: subtle and easy to dismiss — but paired with coolant loss it’s diagnostic, and it’s still early-stage money.
How garages diagnose it — and why you should insist on the test
“Sounds like head gasket” is a hypothesis, not a diagnosis — and at £500–£1,500, the difference matters. The proper tests are cheap and conclusive: a block test (£30–£60) draws air from the cooling system through a reagent that changes colour if combustion gas is present; a cooling system pressure test (£30–£50) finds external leaks that mimic gasket symptoms; a compression or leak-down test pinpoints which cylinder is breached. Together they’re £50–£100 — the best-value insurance in this repair, because a stuck thermostat, a failed radiator cap or a leaking water pump can imitate half the symptom list at a tenth of the cost.
The rule to hold: no head-off quote without a positive block test. A garage confident in its diagnosis will happily show you the colour change. And before anyone lifts a head, it’s worth knowing everything else the car has coming — enter your reg below and we’ll read its MOT history and price the full picture, because the fix-or-sell decision needs the whole bill, not just this one.
Is it worth fixing a head gasket?
This is the repair where the half-the-value rule earns its keep. If the quote is under about half the car’s healthy value, fixing usually wins: a properly repaired head gasket — skimmed head, cause addressed — is a lasting fix, and the alternative is selling a car that trade buyers will price near scrap the moment “head gasket” appears in the description. On a £4,000 car, a £900 repair beats a £700 broken-sale valuation every time.
The maths flips on older, cheaper cars — a £1,200 quote on a £1,500 car with tired brakes and a cambelt due is money after bad. The honest checklist: what’s the car worth fixed, what else is stacking up (this is exactly what our reg check totals), does the engine hold oil pressure and run cleanly otherwise, and are there receipts for recent big jobs like a clutch or cambelt that tip the balance toward keeping it? Decide with those four numbers, not with sunk-cost feelings — in either direction.
Do head gasket sealants actually work?
The honest answer: sometimes, briefly, for the smallest failures — and that has a legitimate use. Pour-in sealants can seal minor coolant-system seepage and micro-breaches, and on a £600 car facing a £900 quote, a £30 bottle that buys six months is a rational bridge to selling or scrapping on your own schedule.
What they are not is a repair. They can’t close a combustion-to-coolant breach under cylinder pressure, they do nothing for a warped head, and the ones that “work” by clogging can clog the heater core and narrow radiator passages just as happily. Never use one on a car you intend to keep and repair properly — the residue makes the eventual real fix harder — and disclose it if you sell. Rule of thumb: sealant is a decision-delayer for a car on its way out, not medicine for one you’re keeping.
Independent garage vs main dealer — and why fast-fit sits this one out
Head gaskets are engine-builder territory: torque-to-yield sequences, machine-shop relationships, judgement calls on marginal heads. Fast-fit chains generally don’t offer the job — this is the repair where you’re choosing between a good independent with engine experience and the dealer.
| Independent garage | Main dealer | National fast-fit chain | |
|---|---|---|---|
| Typical head gasket price | £500–£1,500 (baseline) | +50% on average | Rarely offered |
| Hourly labour rate | £50–£80 | £120–£180 | — |
| Parts fitted | Quality aftermarket (Elring, Payen, Victor Reinz) | Genuine branded OEM | — |
| Warranty on the job | Typically 12 months | 12–24 months | — |
| Best for | Out-of-warranty cars — ask about their machine shop and engine work | Newer cars, goodwill claims on known-issue engines | — |
One dealer-specific tip: if a relatively young, full-history car blows a gasket on an engine with a known weakness, ask the dealer about a goodwill contribution before paying anyone — manufacturers quietly fund a share of such repairs more often than drivers realise. Otherwise the usual maths applies — see the full comparison.
How to pay less on a head gasket repair
Test before you spend. £50–£100 of diagnosis protects £500–£1,500 of repair — and regularly reveals a £150 thermostat or radiator problem wearing a head gasket costume. It’s the highest-leverage money on this page.
Get quotes at this labour count. At 8–12 hours, the £30/hour spread between local independents is £250–£350 on identical parts. No repair on our site rewards a second quote more.
Bundle everything the open engine offers. Cambelt kit at parts-only cost on belt engines, thermostat, water pump if it’s driven by the belt, tired hoses — each is a fraction of its standalone price with the front of the engine already apart.
Fix the cause in the same visit. Whatever overheated the engine — fan, thermostat, radiator, cap — goes on the invoice too, or the new gasket inherits the old one’s killer. A £40 thermostat is cheap warranty on a £900 job.
At 8–12 hours of labour, quotes for the identical job can differ by £300+. Compare local garages before you commit.
Compare live quotesHead gasket FAQ
How much does a head gasket repair cost in the UK?
£500–£1,500 at an independent garage, parts, head skim and labour included — the gasket itself is only £30–£100, and 6–12 hours of labour makes up most of the bill. A warped or cracked head adds £300–£800, and main dealers charge roughly 50% more throughout.
What are the symptoms of a blown head gasket?
Unexplained coolant loss, persistent white sweet-smelling exhaust smoke, mayonnaise-like emulsion under the oil cap, bubbles in the expansion tank, overheating, and rough cold starts. Coolant loss with no visible leak is the classic early sign — the others tend to follow it.
Can I drive with a blown head gasket?
You shouldn’t. Every heat cycle risks warping the head — the difference between a £600 repair and a £1,400 one — and a sudden coolant dump can cook the engine outright. If you must move the car, keep it short, watch the gauge, and stop the moment it climbs.
What causes a head gasket to fail?
Overheating is the big one — a stuck thermostat, failed fan, low coolant or a leaking radiator cooks the gasket. Age, detonation from poor fuel, and design weaknesses on certain engines do the rest. Whatever the trigger, it must be fixed with the gasket or the failure repeats.
How is a head gasket failure diagnosed?
A block test (£30–£60) chemically detects combustion gas in the coolant — the definitive check. A cooling-system pressure test finds external leaks that mimic the symptoms, and a compression or leak-down test identifies the breached cylinder. Never accept a head-off quote without a positive block test.
How long does a head gasket replacement take?
Typically 6–12 hours of workshop labour, but the head’s trip to the machine shop for pressure testing and skimming means the car is usually in for 2–4 days. Complex twin-cam and diesel engines sit at the top of the range.
Do head gasket sealants work?
Only for minor seepage, and only temporarily — a reasonable bridge on a low-value car you’re moving on, never a repair. They can’t seal combustion breaches, do nothing for a warped head, and can clog the heater core. Don’t use one on a car you plan to keep and fix properly.
Is a car with a blown head gasket worth fixing?
Apply the half-the-value rule: if the quote is under about half the car’s healthy value, repair usually beats selling — trade buyers price “head gasket” cars near scrap. Above that, total up everything else the car needs before deciding; on older cars the honest answer is often no.
Will a blown head gasket fail the MOT?
Not directly — the tester doesn’t check the gasket itself. But its consequences can fail: excessive white smoke can fail emissions, and coolant leaks earn advisories. A car can pass its MOT with a failing gasket, which is one more reason a pass isn’t a health certificate.
Is mayonnaise under the oil cap always a head gasket?
No — short-journey cars build the same creamy emulsion from ordinary condensation that never burns off. Judge it alongside the other signs: mayo plus coolant loss or overheating means test now; mayo alone on a school-run car often clears after a proper motorway drive.
How long should a head gasket last?
The life of the engine, in normal service — it’s not a scheduled wear item like a clutch or cambelt. Failures are almost always provoked, usually by overheating, which is why the cooling system deserves the credit (or blame) for most gaskets’ lifespans.
Will a head gasket repair come with a warranty?
Yes — typically 12 months or 12,000 miles on parts and labour at an independent, more at a dealer. Ask specifically whether the warranty covers the head itself if it was skimmed rather than replaced; a garage confident in its machine shop will say yes without blinking.