What would be the best vehicle for a child 16 years?

I am looking for a truck with decent gas mileage, and preferably a V6 4-door. A good half the size of truck that will not break me, not too small but not huge. Any suggestions? Thanks

I would recommend the 2009 Toyota Tacoma has a V6 engine, 4 doors, not that big that has a medium-sized trunk. the doors however, in 2 cases, the handle is abroad, and the other 2 which are indoors once you open the front 2 doors you will see the handle of the 2 rear doors.