VW Group powertrain boss Heinz-Jakob Neusser announced a flat-eight engine is not being developed for future Porsche 911s.

VW Group powertrain boss Heinz-Jakob Neusser announced a flat-eight engine is not being developed for future Porsche 911s.

Speaking to British magazine Autocar, Neusser admitted a flat-eight engine was considered at one point and it even reached the pre-development phase, but the project was eventually dropped. He went on to specify the engine would have to be 5.0 liters in displacement and it's "probably too big" for the 911 which will stick with high-revving flat-six motors.

Heinz-Jakob Neusser said the adoption of turbocharging for the 911 lineup will give Porsche more freedom in designing engines. A facelifted version of the 911 will be unveiled in September at the Frankfurt Motor Show and will inaugurate a new array of engines, including turbo-six horizontally-opposed motors replacing the current naturally aspirated units.

An all-new Porsche 911 is slated to come out sometime in 2018.

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