Porsche's head of Research and Development has confirmed the Boxster and Cayman will be offered with four-cylinder engines.

Porsche's head of Research and Development has confirmed the Boxster and Cayman will be offered with four-cylinder engines.

Speaking to Car & Driver, Wolfgang Hatz said the company is "working hard" on new flat-four engines for the models. He declined to go into specifics but hinted the four-cylinder engines will be introduced when the cars are facelifted in 2016.

When pushed for more details, Hatz confirmed the Cayman GT4 will use a naturally aspirated flat-six engine but refused to say whether or not it will be the only Boxster or Cayman with a six-cylinder engine. This seems to suggest it could be the only variant to be offered with an engine other than the new turbocharged four-cylinder.

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Porsche R&D boss confirms flat-four engine for the Boxster & Cayman