Ford plans to more than double the number – to 1.4m – of fuel-efficient, six-speed automatic transmissions in its North American cars and trucks by the end of 2009.

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The automaker claims the transmissions provide 4 to 6% improved fuel economy compared with typical four- and five-speed gearboxes, as well as better acceleration and are quieter and more refined.


“Advanced six-speed automatic transmissions are an important element in our sustainability strategy to improve fuel economy for our customers and reduce greenhouse gas emissions by 30% in our new vehicles by 2020,” said Barb Samardzich, vice president, Ford North America Powertrain Operations.


“They also deliver improved acceleration and smoother shifting.”


By the end of 2012, 98% of the car maker’s North American automatic transmissions will be six-speed versions.


The newest six-speed is the 6F35 which makes it debut in the 2009 Ford Escape and Mercury Mariner small SUVs, replacing the current four-speed. It also will be used in the 2009 Mazda Tribute, as well as two other vehicles early next year.


The 6F35 is produced at the Van Dyke transmission plant in Sterling Heights, Michigan, and will double the plant’s production capacity to 1.3m units annually.

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