Early examples of the 1.0-litre three-cylinder were prone to head gasket leaks and even complete engine failure. However, the design flaws that led to these problems were quickly resolved, with many of the affected cars receiving repairs and improved parts under warranty – so if an older example hasn’t failed by now due to a manufacturing issue, then it is probably unlikely to happen. . Either way, it’s still something to be aware of when shopping the used market.

There were a few recalls in 2018, but the failures were not specifically related to the EcoBoost technology. A recall for the Focus 1.0-liter EcoBoost related to a nylon pipe that can overheat in the cooling system, while a potentially more serious failure in the cylinder head of the 1.6-liter EcoBoost engines is not directly related to the EcoBoost technology.

Ford EcoBoost “wet belt” problem

Perhaps the biggest cause for concern was a major recall in North America in 2024 related to the “wet belt” EcoBoost system. Over 130,000 Ford Focus and Ford EcoSport vehicles with the 1.0L EcoBoost and automatic transmission have been recalled for a problem with the belt that drives the oil pump, known as a wet belt.

The same engine and gearbox configuration was offered in the Focus, EcoSport and Fiesta in the UK. Although there have been several reports of problems with this engine and gearbox combination in the UK, Ford has yet to announce a recall here.

What are the benefits of Ford EcoBoost?

Ford likes to explain EcoBoost by splitting the name into two constituent parts. “Eco” refers to the engine’s fuel economy and reduced CO2 emissions, while “Boost” refers to the power and performance potential of the unit. The two qualities are combined in a single engine package that offers both efficiency and eager acceleration. Ford achieved this using two specific technologies.