The Ford Flex was a series of full size crossover SUVs that were introduced for the 2009 model year. The Flex was offered in front wheel drive or all wheel drive configurations, and was powered by a front mounted engine. Two V6 units were offered, the standard 3.5L Duratec V6 , and the all wheel drive option only 3.5L twin turbo Ecoboost V6. Both engines were paired to a 6 speed automatic transmission. Production of the Ford Flex lasted until 2019.