6. Land Rover Range Rover Sport
This is a super expensive piece of kit and while it performs OK, it suffers from a truly horrendously low powertrain dependability rating from the JD Power side of things. In other areas it scores just averagely.
Consumer Reports had an even harsher viewpoint though, scoring it only one out of five for its predicted and historical reliability. They even listed it in their top 10 worst cars of 2017. Ouchies.