Car Makers Have Quietly Stopped Telling You When to Change Your Cam Belt

We went looking for the official cam belt interval for the ten most common cars on British roads and came back without a single current published figure. Sixteen engine variants across those ten cars were checked against manufacturer documents, regulator filings and government data.

The number still exists, and it now reaches owners one registration at a time, through a franchised dealer, rather than through anything a driver can look up for themselves. One manufacturer used to print a time limit on its own public advice page for British owners, and that limit is no longer there.

Key takeaways:

• We checked the ten most common cars licensed in the UK, 16 engine variants across them, and found no current manufacturer-published UK cam belt interval for any of the ten.
• Where a current figure does exist in public, it comes from a US safety regulator’s filing or a parts maker’s technical bulletin rather than from the car maker’s own UK advice.
• Ask a franchised dealer for the current schedule against your registration or VIN, get it in writing, and keep it with the service record.

What We Looked For, and What We Found

The general rule has not changed. Most belts are still due at a mileage or an age, whichever arrives first, and a snapped belt on an interference engine can cost more to put right than an older car is worth. What has changed is whether an owner can find the figure that applies to their own car.

This started as a check on a handful of models and became a database of 31 engine rows, built from manufacturer owner sites, handbooks, press releases, official parts shops, regulator filings and web archives over three days in September 2026.

The Ten Cars, and Why We Chose Them

The list comes from Department for Transport vehicle licensing statistics for the first quarter of 2026: the Ford Fiesta, Volkswagen Golf, Vauxhall Corsa, Ford Focus, Nissan Qashqai, Volkswagen Polo, Toyota Yaris, Vauxhall Astra, MINI Cooper and BMW 3 Series.

The numbers behind that ranking are large. At the end of March 2026 there were 1,275,084 Fiestas licensed in the UK, along with 953,336 Golfs, 919,683 Corsas, 877,721 Focuses, 701,390 Qashqais and 684,718 Polos.

These are the cars on the road rather than this year’s best sellers. Most are long out of warranty, many are with their second or third owner, and they are precisely the cars whose belts fall due now. Engine choices came from DVSA’s anonymised MOT test data for 2024, taking the most common engine in each model.

How We Searched

Each engine was checked against the manufacturer’s UK owner site, the published handbook for the model year, the press room, the official online parts shop and, where a page had changed over the years, archived captures of the earlier versions.

We set the bar at a figure published by the manufacturer, in miles or years, for that engine. A forum post did not count. Neither did a garage blog, a price comparison page, a parts retailer’s estimate or a general range attached to no particular car.

Every row was logged as Verified, Not found or Conflicting, with the source and the capture date recorded against it. Not found means we could not locate a published figure. It does not mean no figure exists inside a system we cannot see.

The Result

Of the 31 engine rows researched, which cover the ten models plus the wet belt engines behind our earlier coverage, 18 are recorded as Not found, 11 as Verified and 2 as Conflicting.

Across the ten most common cars, not one has a current manufacturer-published UK interval that we could find. The three verified figures attached to those models all come from outside the UK: Nissan’s schedule in South Africa, a statement from Toyota Motor Europe, and the US safety regulator’s documents on Ford’s 1.0 EcoBoost.

One distinction is worth drawing carefully. Several of these cars use a timing chain, among them the Polo 1.2, the Yaris 1.33, the MINI and the 320d. No scheduled replacement is normal on a chain, and the absence of an interval there is no failing on anyone’s part. Those rows sit under Not found only where we could locate no manufacturer document confirming there is none, which is a different thing from a belt engine whose interval we could not find.

Where the Numbers Went

The pattern repeats across brands. The figure has moved behind a login, a dealer phone call or a trade system that needs an account, and in one case a time limit that used to sit on a manufacturer’s public advice page has gone from it.

We did not put any of this to the manufacturers, and this piece makes no claim about their reasons. What follows is what we found and where we found it.

Ford: From an Online Lookup to Your VIN

Ford’s own online parts shop confirms which drive type a car has once a registration is entered, which is how the belt or chain question was settled for the Fiesta and the Focus. The replacement schedule itself sits behind a Ford Account login.

Ford UK’s published advice directs owners to an authorised Ford dealer, quoting the vehicle identification number, for the specific details of their car: which part it has, when that part is due for replacement and what the work costs.

The older route has closed. An archived Ford UK page from 2021 sent owners to Etis, Ford’s online service information lookup, to generate a service check sheet against a VIN for cam belt intervals. Etis is no longer available, and by 2024 the same advice pointed owners at a Ford Account or FordPass login instead.

Volkswagen: A Time Limit That Was There, and Now Is Not

Archived captures of Volkswagen UK’s cam belt advice show a time limit that shifted and then disappeared. A capture from 2011 gives a change about every four years. Captures from 2013, 2014 and 2019 set five years for cars registered on or after 1 September 2009, and four years for cars registered before that date.

The live page in September 2026 suggests changing the cam belt each time the car reaches its recommended mileage. No time limit appears on it.

A separate document pulls the other way. A 2009 Volkswagen press description called the toothed belt on the Golf 1.6 and 2.0 TDI maintenance free. Our database logs the Golf as Conflicting for that reason: two manufacturer documents, years apart, that do not agree. We draw no conclusion about which applies to any individual car, and an owner cannot settle it from public sources.

Vauxhall: Read the Handbook, the Handbook Says Ask the Workshop

Vauxhall handbooks from 2006 to 2018 contain no belt figures at all. They refer the owner to the service schedule held at the workshop.

That schedule sits in a trade system requiring an account, which an owner does not have. The handbook in the glovebox, the document most drivers treat as the authority on their car, points at a door they cannot open.

Nothing else official surfaced for either Vauxhall in our ten. We have no published interval for the Corsa 1.4 or the Astra 1.6, and nothing here should be read as one.

Nissan, and the South African Schedule

Nissan’s UK manuals site covers cars from 2022 onward. The GB handbook link for the 2015 Qashqai, a far more common car on British roads than anything built in the last four years, returns an error.

The only current figure we verified for a Qashqai comes from Nissan South Africa’s service schedule: 90,000 km, 54,000 miles or 48 months for the 1.5 dCi engine.

We did not treat that as a UK figure, and neither should an owner. Service schedules vary between markets with fuel quality, climate and local requirements, and a document written for South African conditions is evidence of what Nissan tells owners in South Africa. Confirming the same numbers apply here is a question for Nissan GB or a franchised dealer.

The Two Places a Figure Still Exists

Two current intervals did surface in the research, both for engines with a documented history of early belt failure. Neither came from the car maker’s own UK advice, and both reached the public through a route that had nothing to do with informing owners.

When a Regulator Asks

Ford’s revised interval for the 1.0 EcoBoost is six years or 100,000 miles. It became public in June 2026, in a US safety investigation, under a programme Ford described as global.

It replaced a schedule of 150,000 miles that set no time limit at all. The regulator wrote to Ford on 18 September 2026 asking why the original schedule carried no time limit.

The route that number travelled is the story. A British owner of a 1.0 EcoBoost can read the revised interval in the files of an American regulator, having found nothing on the subject from Ford in this country.

When a Parts Maker Publishes

The second figure comes from a belt and bearing manufacturer’s technical bulletin, which gives the revised interval for the Stellantis 1.0 and 1.2 PureTech engines as six years or 100,000 km, about 62,000 miles.

Bulletins of that kind are written for garages rather than owners. A supplier publishes one when workshops need to know that a fitting procedure or a service figure has changed, and it is public only in the sense that nothing stops a member of the public reading it.

Catalogues are the other half of the picture. The two largest belt brands no longer show original equipment intervals in their public catalogues, and one supplier’s catalogue limited itself by region. The earlier official PureTech interval, the figure these engines were sold with, does not appear in any source we accept, which shows how completely the older numbers have gone.

What This Means for You

None of this makes a belt more likely to snap. It makes the interval harder to confirm, and it shifts the work of finding it onto the owner.

If You Own One of These Cars

Phone a franchised dealer for the brand, give them the registration or the VIN, and ask for the current cam belt schedule for that exact car. Dealers work from the manufacturer’s live service data, which is where the figure now sits.

Ask for it in writing. An email confirming the interval, the car it applies to and the date it was given costs nothing and settles any later disagreement about what was due and when. It belongs with the service record, alongside the invoices.

A printed handbook from the year of manufacture is not the last word. Intervals have been revised downward on several engines after the cars were sold, and a handbook printed before a revision still shows the superseded figure. Wet belt engines have had their limits cut twice over, and the handbooks for those cars were printed long before.

If You Are Buying Used

No public figure means a buyer cannot check a seller’s claim. A seller saying the belt was done at 70,000 miles is making a statement the buyer has no way to test, with no paperwork to confirm it and no published schedule to measure it against.

Ask for the invoice rather than the stamp. It should name the garage, the date, the mileage and the parts fitted, including the tensioner and, on engines where the belt drives it, the water pump. A stamp in a service book records that a visit happened and nothing about what was replaced.

Get the dealer schedule before the money changes hands. A call to a franchised dealer with the registration takes minutes and turns an unknown into a number, which is worth far more before purchase than after. A belt already overdue against that number is a few hundred pounds off the asking price, agreed while there is still a negotiation to have.