Need to know - recent horror movie

4 young people on a road trip. Car breaks down. Two walk to a gas station where one crazy brother works. The other two who stay behind are attacked by another crazy brother and the boy is killed while the girl escapes. Eventually the boy at the station is hung up and tasered and presumed dead. The two girls end up at the crazy brothers homestead where a 3rd brother is locked up and grunts like an animal. There is another girl being held captive there already and she is pregnant by them. Eventually the toughest girl manages to get loose. Her friend is killed and the pregnant girl whose tongue was removed kills herself. The boy who was tasered is still alive but then he is killed after the freak brother is released. The tough girl gets to the truck to escape and just as she starts the engine, she is shot in the head and killed by one of the brothers as the freak brother breaks through the window. This movie is either new or in the last couple years and I cannot think of the name, any actor names, and where I watched it.