Ford Fiesta head gasket cost
fitted at an independent garage · gasket set, new head bolts, skim, fluids and labour included
- Diagnosis first £50–£90
- Typical time 6–9 h
- Dealer +50%
A Ford Fiesta head gasket costs £500–£900 fitted at an independent garage, with diagnosis at £50–£90 and 6–9 hours of labour making up most of the bill. But on a Fiesta the more useful number is often smaller: on the 1.0 EcoBoost, the coolant loss that looks like a blown gasket frequently starts at a cracked plastic pipe costing a fraction of that. Which of the two you’re facing is a £50 test away — and it’s the same test that decides whether the head survives. Compare against every model here.
Fiesta head gasket costs by job
| Job | What it involves | Fitted cost (independent) |
|---|---|---|
| Diagnosis first | Block test for combustion gas in the coolant, plus a cooling-system pressure test to find external leaks | £50 – £90 |
| Head gasket replacement | Full head set, new single-use stretch bolts, machine-shop pressure test and skim, fresh coolant and oil | £500 – £900 |
| With a condemned head | When the head won’t skim true or the pressure test finds a crack — a reconditioned or replacement head | Add £300 – £800 |
| Main dealer | The identical job at franchise labour rates | About 50% more |
Ranges match our head gasket cost guide row for the Fiesta. Estimates assume the head skims within tolerance — see below for why that assumption matters more on this car than on most.
The £900 bill that starts with a plastic pipe
The Fiesta’s head gasket story is really a cooling-system story. On the 1.0 EcoBoost — the engine in most modern Fiestas on British roads — a slim plastic degas pipe carries superheated steam from the water-cooled turbo back to the expansion tank. Thousands of heat cycles make that nylon brittle, and when it finally splits it doesn’t weep: it dumps. The engine can be empty of coolant in the time it takes to reach the next junction, and an all-aluminium head with a very small coolant volume has almost no thermal margin to spend. That is the sequence behind most Fiesta head gasket quotes — a cheap part failing, and an expensive one paying for it.
The cruelty is that the warning arrives late. Earlier cars weren’t fitted with a coolant level warning, so the first thing many drivers noticed was the temperature gauge already climbing — by which point the damage is measured in how many minutes the engine ran hot, not in how good the gasket was. Ford has run field service actions on the coolant hose design for these engines, and has in some cases funded repairs outright on affected cars. Before you pay anyone, it is worth asking a Ford dealer to check your VIN against any outstanding action, and asking about a goodwill contribution if the car is young with a full history — this is exactly the scenario manufacturers quietly part-fund more often than drivers expect.
Caught early, this is not a head gasket job at all. Coolant disappearing with no puddle on the drive can be the degas pipe, the expansion tank cap, the thermostat housing or the water pump — the same £40–£150 territory that our main guide flags as regularly wearing a head gasket costume. The question that separates the two is not how the car sounds. It is whether combustion gas is in the coolant, and that costs £50–£90 to answer.
Which Fiesta engine is at risk — and which one isn’t
The badge on the boot doesn’t tell you much; the badge on the engine does. The reputation belongs almost entirely to the 1.0 EcoBoost — turbocharged, direct-injected, small in capacity and working hard, with the cooling system described above. It’s the engine that earned the nickname drivers use in forums, and the one worth checking coolant on fortnightly rather than annually.
The older naturally aspirated petrols — the 1.25 and 1.4 — are a different proposition entirely. No turbo, no pressurised degas circuit, modest thermal loads: head gaskets on these fail when something else cooks them, exactly as the main guide describes, and not because of any inherent weakness. The same is broadly true of the 1.5 and 1.6 TDCi diesels. If you own one of these and you’re reading this page because a garage said “sounds like head gasket”, that phrase deserves more scepticism, not less — and it deserves the test before it deserves your money.
One thing the 1.0 EcoBoost owner should know is that this engine has a second, unrelated weak point: its timing belt runs in oil, and a belt that sheds material can starve the oil pump. It is a separate failure with a separate bill, covered on our wet belt page and priced for this car on the Fiesta cambelt page — worth knowing about when you’re totting up what the car owes you, not because it causes gaskets to fail.
Gasket or head? On this engine the answer changes the bill
Most cars give you a clean question: is the gasket blown or not. The 1.0 EcoBoost gives you a messier one, because the aluminium head itself can develop fine cracks between the coolant passages and the cylinders. Both faults produce a positive block test. Both produce white smoke, coolant loss and a shaky cold start. Only one of them is fixed by a £600 gasket — the other one is fixed by a head, and that is where the +£300–£800 in the table comes from.
So the question to put to the garage before you agree to anything is: “will the head be pressure-tested off the car before you quote me a final figure — and what happens to the price if it fails the test?” A garage that works with a machine shop will answer that without hesitating, because it’s the question they ask themselves. A garage that quotes a flat head gasket price on an EcoBoost without mentioning the head at all is quoting for the good outcome and will find the bad one halfway through.
On a high-mileage Fiesta where the head is condemned, the honest maths sometimes stops pointing at repair — a recon or used engine can overtake the value of the car, and that’s a decision to make with the full number rather than in stages. Our worth-it calculator runs the half-the-value rule on it, and the reg check below totals everything else the car has coming.
Worked example — Fiesta 1.0 EcoBoost, head gasket, head skims true
Head set and new stretch bolts £140 · machine shop pressure test and skim £80 · labour 7 hours at £65 £455 · coolant, oil, filter, thermostat and a new degas pipe £90 · total ≈ £765 — inside the £500–£900 range above. Had the pressure test found a crack, a reconditioned head would push the same job past £1,100 and into the fix-or-sell conversation.
FAQ
How much does a Ford Fiesta head gasket cost in the UK?
£500–£900 fitted at an independent garage, including the gasket set, new stretch bolts, a standard head skim and 6–9 hours of labour. Diagnosis first costs £50–£90. If the head won’t skim true or is cracked, add £300–£800, and a main dealer charges roughly 50% more throughout.
Why does my 1.0 EcoBoost keep losing coolant?
The usual first suspect is the plastic degas pipe, which turns brittle with heat cycles and splits — not the head gasket. The expansion tank cap, thermostat housing and water pump belong on the same shortlist. A block test tells you whether combustion gas is in the coolant, which is what separates a cheap fix from an expensive one.
Is the Ford 1.0 EcoBoost head gasket a known problem?
The gasket is usually the casualty rather than the culprit. The engine’s small coolant volume and aluminium head leave very little margin when a coolant hose fails, so overheating does the damage. Ford has run field service actions on the hose design — ask a dealer to check your VIN before paying for anything.
Can the cylinder head crack instead of the gasket on a Fiesta?
Yes, and it’s the reason a Fiesta quote should never be a flat figure. Fine cracks can form between the coolant passages and cylinders, producing exactly the same symptoms as a blown gasket. Only a machine-shop pressure test on the removed head settles it, which is why you should ask what happens to the price if the head fails that test.
Which Fiesta engines are least likely to blow a head gasket?
The naturally aspirated 1.25 and 1.4 petrols, and broadly the 1.5 and 1.6 TDCi diesels. None carries the turbocharged EcoBoost’s cooling-system weak point, so a gasket failure on these is provoked by something else — a stuck thermostat, a failed fan, a leaking radiator — which must be fixed alongside it.
Will Ford pay for my Fiesta’s head gasket repair?
Sometimes. Ford has funded repairs on affected 1.0 EcoBoost cars and has issued service actions on the coolant hose. It’s worth asking a dealer to check your VIN for outstanding actions and to ask about a goodwill contribution if the car is relatively young with a full service history — before you commit to paying an independent.
Can I drive my Fiesta with a suspected head gasket fault?
You shouldn’t, and on this engine the reason is specific: every minute run hot is what turns a gasket job into a head job, which is the difference between roughly £700 and £1,300 on the same car. If the gauge climbs or the coolant is empty, stop and have it recovered rather than nursed home.
Is a Fiesta with a blown head gasket worth fixing?
Apply the half-the-value rule: if the quote sits under about half what the car is worth healthy, repair usually beats selling, because trade buyers price head-gasket cars near scrap. On an older Fiesta where the head is condemned as well, a recon engine can exceed the car’s value — total up everything else it needs before deciding.