The 3.5L EcoBoost engine has been around long enough that there are several performance upgrades owners can choose from. Here are six of the best to consider.

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Set to go on sale this summer, the Flex EcoBoost gets V8 power with V6 fuel economy. With 22 mpg on the highway the V8-power is impressive with 355hp and 350 ft-lbs of torque. The EcoBoost engine ...

Other 2010 products set to offer this powertrain combination include the Ford Flex and Lincoln MKT. High Torque Edits The 3.5-liter EcoBoost engine strategically uses two small turbochargers ...

Ford Flexes are now beginning ... Down the road, when the Flex is available with a turbocharged direct injection Ecoboost option, its fuel economy should raise a bit more.

Based on the Blue Oval's D4 platform shared by the period Ford Explorer and badge-engineered Lincoln MKT, the Flex came with a choice of 3.5L V6 Duratec or EcoBoost powertrains. This included a ...

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*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title ...

Standard equipment includes the features that come with this vehicle. Select Your Options Choose options to include in this vehicle value. For the most accurate pricing and values on new or used ...