With a distinctive boxy shape that combines elements of a SUV, minivan, and station wagon, the Flex is a very functional and versatile vehicle. The base 3.5-liter V6 engine has been updated over the years in an attempt to improve acceleration and fuel economy, but it still falls short on refinement.
On the plus side, the ride is comfortable and the cabin is quiet and spacious. The EcoBoost twin-turbocharged V6 supplies effortless performance, especially welcome for towing. Rear-seat room is cavernous with a usable third-row seat and generous cargo space. But handling is clumsy and maneuverability is hampered by a large turning circle and limited rear visibility.