16. Ford Flex EcoBoost
The Ford Flex EcoBoost may look like your typical family hauler, but under the hood is a potent twin-turbo V6 engine. This powertrain transforms the Flex into a genuine sleeper, offering brisk acceleration and impressive towing capability. Its unconventional styling only adds to its stealthy appeal. Edmunds notes that the Flex EcoBoost delivers surprising performance without sacrificing comfort or practicality.