If you own a Ford diesel from the last decade — a Kuga, Focus, Transit Custom, Galaxy, S-Max or Mondeo with the 1.5 or 2.0 EcoBlue engine — you have a wet timing belt. And like the petrol 1.0 EcoBoost, that belt has a finite life. When it fails, it doesn’t just leave you stranded — it can wreck the entire engine.

EcoBlue wet belt — what’s different from the EcoBoost?

The 1.5 and 2.0 EcoBlue diesel engines (launched 2016) use a belt-in-oil design similar to the petrol EcoBoost, but with two important differences:

• Higher operating temperatures (diesels run hotter under load) accelerate rubber breakdown.
• Higher cylinder pressures put more stress on the belt at the cam-drive end.

Net result: EcoBlue wet belts often fail earlier than EcoBoost belts, particularly in vans and high-mileage cars. We’ve seen Transit Custom 2.0 EcoBlue belts shed material at 70,000 miles. By 100,000 miles, we’d consider it a near-certainty on a working vehicle.

Affected models

• Ford Focus 1.5 EcoBlue (2018 onwards)
• Ford Kuga 1.5 EcoBlue / 2.0 EcoBlue (2017 onwards)
• Ford Mondeo 2.0 EcoBlue (2018–2022)
• Ford S-Max 2.0 EcoBlue (2018 onwards)
• Ford Galaxy 2.0 EcoBlue (2018 onwards)
• Ford Transit Connect 1.5 EcoBlue (2018 onwards)
• Ford Transit Custom 2.0 EcoBlue (2016 onwards)
• Ford Tourneo / Transit 2.0 EcoBlue (2016 onwards)
• Ford Ranger 2.0 EcoBlue (2019 onwards)

When does Ford say to replace it?

Original guidance was 150,000 miles or 10 years. Following widespread reports of premature failure, Ford has revised this for several models down to 116,000 miles / 10 years. For high-mileage commercial vehicles (Transit, Tourneo), we’d suggest inspecting at 80,000 miles and replacing by 100,000 miles unless the inspection is genuinely clean.

Symptoms to watch for

• Loss of power, particularly noticeable on motorway hills.
• Whining or rumbling from the timing cover area.
• Oil light flicker on first start of the day.
• Black sludge on the oil filler cap or dipstick.
• P0011, P0016, P0017, P0019 (cam-crank correlation) fault codes.
• Engine warning light + reduced engine performance (“limp home”) mode.

What we do

• Inspect the existing belt and oil pickup for debris.
• Replace the wet belt with genuine Ford / OEM part.
• Replace tensioner and idlers as a matched set.
• Drop and clean the sump; replace the oil pickup if any debris is found.
• Fresh oil and filter (the existing oil will be contaminated).
• Re-time cam and crank using OEM locking tools.
• Diagnostic scan, run, and road-test.

Vans — special note

If you’re running a Transit Custom or Tourneo for work, downtime is money. We understand. We aim to turn wet belt jobs around in a working day for vans where possible — call us, give us the registration and mileage, and we’ll book you in with a guaranteed completion time. Many of our regular van customers are local Crawley, Gatwick and Reigate trades — we know what it’s like to lose a van for a week.

Get a fixed-price quote

Send us your registration via the free estimate form, or call 01342 643 780. Free collection within 15 miles of Gatwick. Mon–Sat 9 am–6 pm.