A wet belt change isn't a cambelt change under a different name, and the invoice says so. Here's what the job costs on each of the engines that use one, what you're actually paying for, and what it costs when the belt gets there first.
How much does a wet belt replacement cost?
Between about £800 and £6,000, depending on the engine and on whether the belt has already done any damage. These are the ranges in our own faults database, which prices each fault from UK repair evidence rather than from a parts catalogue:
| Engine | Where you'll find it | What our data holds |
|---|---|---|
| 1.2 PureTech | Peugeot 208, Citroen C3, Vauxhall Corsa and their relatives | £800 to £1,500 |
| 1.0 EcoBoost | Ford Fiesta, Focus and the small Fords | £1,000 to £4,000 |
| 1.0 VTEC Turbo | Honda Civic | £1,500 to £4,000 |
| 2.0 EcoBlue | Ford Transit Custom and the Ford vans | £2,000 to £6,000 |
The spread inside each range is the whole story. The low end is a belt changed on an engine that's been caught in time. The high end is a belt change plus the consequences of one that wasn't, and on a car worth a few thousand pounds that's the point where people start weighing up scrapping it.
Why does it cost more than a normal cambelt?
Because the belt is inside the engine rather than behind a plastic cover on the end of it. A conventional cambelt is a bolt-on job. A wet belt means dropping the sump and going in through the oil, and on these engines the belt drives the oil pump as well as the timing, so the pump, the pickup and the strainer are all part of the conversation.
That's why the same three-cylinder engine can be quoted at £800 by one garage and £1,500 by another: the first is quoting a belt, the second is quoting a belt, an oil pump, a strainer, the seals and a fresh fill of oil. On the Ford vans it's dearer again because there's more to come apart before you reach it.
Get two quotes, and make sure both are for the same job. "Wet belt change" on its own isn't a specification.
What does it cost if you leave it?
An engine, usually. The failure mode isn't a belt snapping: it's the belt degrading into the oil it's sitting in, shedding material that blocks the oil pickup and starves everything downstream of it. What fails next is the bottom end, or the turbo, or on the PureTech the brake vacuum pump, which is why a hard brake pedal is one of the symptoms on the list.
Here's the part worth knowing before you buy one, because it's the reason this is a buying question rather than a servicing one. This is where our fault rows say the failures actually turn up:
| Engine | Where our data puts the failures | What it costs by then |
|---|---|---|
| 1.2 PureTech | 40,000 to 65,000 miles | £800 to £1,500 |
| 1.0 EcoBoost (Fiesta) | 50,000 to 80,000 miles | £1,000 to £4,000 |
| 1.0 EcoBoost (Focus) | 60,000 to 80,000 miles | £1,000 to £4,000 |
| 1.0 VTEC Turbo | 50,000 to 80,000 miles | £1,500 to £4,000 |
| 2.0 EcoBlue | 60,000 to 100,000 miles | £2,000 to £6,000 |
Those rows sit on the model pages too, alongside everything else that goes wrong on the car: Peugeot 208 known faults, Ford Fiesta known faults and Vauxhall Corsa known faults.
Now put the PureTech row against its own service schedule. The revised interval is six years or 62,000 miles. Our data has failures starting at 40,000. A car can be inside its interval, fully stamped up, and still be sitting in the band where these let go.
The warning signs, when there are any, are a low oil pressure light, an engine management light, a rattle from the engine, a turbo that starts whistling, or on the Stellantis engines a brake pedal that suddenly needs a shove. None of those is an early warning. By the time the oil pressure light is on, the damage is the thing you're paying for.
Can you get it paid for?
On the Stellantis engines, possibly. Stellantis extended the warranty on belt and oil-consumption failures for the earlier 1.0 and 1.2 PureTech engines to 10 years or 112,000 miles, covering parts and labour in full where the car has been serviced to schedule, and opened a compensation route for owners who had already paid.
Two honest caveats. The published claim dates differ between sources, and Stellantis' own pages refuse automated checks, so we haven't been able to confirm the current window ourselves: ask a franchised dealer, with the VIN, before you assume anything. And "serviced to schedule" is doing real work in that sentence, which is another reason the service history matters more on these engines than on most.
For the Ford and Honda engines we haven't found an equivalent published UK scheme. That isn't the same as there being none, so it's still worth asking a franchised dealer what goodwill is available on a specific VIN, particularly on the Ford 1.0 EcoBoost, where Ford only cut the interval in June 2026.
Is it worth doing on an older car?
It depends on what the car's worth and what the belt has already done. A £1,000 belt job on a car worth £4,000 is a quarter of the car, which sounds terrible until you price the alternative, because the alternative isn't "nothing", it's an engine at some point in the next couple of years.
Three things push the decision:
- Has it already started? Low oil pressure, a rattle, or oil consumption means you're no longer pricing a belt.
- How has the oil been treated? A car with a thin service history on one of these engines is a bigger gamble than the mileage suggests.
- Is it covered? See above. A PureTech inside the extended warranty is a very different sum from one outside it.
Should you pay for it, or should the seller?
If you're buying, it's a discount, and it's one of the easier ones to argue because the number is quotable and dated. The belt is either done, with an invoice, or it isn't.
Ask one question: has the timing belt been changed, and can I see the invoice? A full service history doesn't answer it. Both Ford and Stellantis shortened these intervals after the cars were sold, so plenty of properly serviced cars are past the revised number without anyone having done anything wrong. Only the invoice answers it, and it should carry the date and the mileage.
If the seller can't produce one on a car that's past due, you've found either your discount or your reason to walk away. Work from the low end of the range above if the car is running faultlessly, and expect the high end to be the seller's argument for why it isn't their problem.
How often does a wet belt need changing?
Six years on all of them now, and either 62,000 or 100,000 miles depending on the engine. The 1.2 PureTech went from 10 years or 175,000 km to six years or 100,000 km, which is about 62,000 miles, with the belt inspected at every service. Ford's 1.0 EcoBoost and 2.0 EcoBlue both went from 10 years or 150,000 miles to six years or 100,000 miles, the EcoBlue in early 2024 and the EcoBoost only in June 2026.
Which cars actually have one is a longer answer, because two of these engines switched to timing chains partway through and the badge on the boot won't tell you: which cars have a wet belt has the full list by engine and year.
What can a check actually tell you about the belt?
Nothing about the belt itself, and anyone selling you otherwise is overselling. The condition of a rubber belt inside a sealed engine isn't in any database, at any price, and it isn't visible without taking the engine apart. Garages will tell you the PureTech belt can be glimpsed through the oil filler on belt engines, but that's trade lore rather than anything the manufacturer documents, and it won't tell you how much of the belt is already in the oil.
What's knowable is everything around it, and on a car you haven't bought yet that turns out to be most of the decision:
- Which engine this particular car has. Our service-interval data separates the belt and chain versions by year and badge, so a 2019 Fiesta 1.0 doesn't come back as "maybe".
- Whether it's past the revised interval, from the registration date and the mileage readings in the car's DVSA MOT history, rather than from what the advert claims.
- What the job costs on that engine, which is the table above, attached to the car in front of you.
- What the seller has and hasn't said. "Full service history" and "recently serviced" are not claims about the belt, and the report says so.
The free scan covers the first two: paste the advert and the registration and it names the engine and reads the MOT mileage against the schedule. The Smart Check is the one that does the money side, with the repair cost for that engine, the questions to put to the seller and a figure to negotiate with, which on an overdue belt is usually the largest single number in the report.
What it can't do is see the belt, or see an oil change nobody wrote down. Those stay unknown whatever you spend, here or anywhere else.
So if there's a car in front of you with one of these engines, run the free scan on the advert before you arrange the viewing, and take the belt question with you. If you want the cost and the negotiation figure, the same report upgrades on the same link without being re-run, so starting free costs you nothing either way.
