Speaking at the launch of the 247bhp Focus ST, chief program engineer for the ST and all other global performance cars, Matthias Ton, stated that the 2.0-litre EcoBoost engine used by the ST was close to its power limit without significantly upgrading its fuel system and turbocharger.
Ton confirmed that, if a next-generation Focus RS is produced, it is likely to use a tuned version of the 2.3-litre EcoBoost engine currently under development in North America. Though destined to replace the heavier V6 units found in entry-level Ford Mustangs in the US, this powerplant could be calibrated to suit the sportier Focus RS.
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