2010 Flex with EcoBoost: The twin-turbocharged 3.5-liter EcoBoost V-6 engine joins the 2010 Flex lineup on well-equipped SEL and Limited models. Active Park Assist is part of the package, and the sensors can be seen on the front of this EcoBoost-equipped Flex. All-wheel drive complements the EcoBoost system. With a turbocharger dedicated to each bank of the V-6, EcoBoost Flexes have dual exhausts. (1/11/09)