A veritable mammoth on wheels, the Infiniti QX is one of those fuel-hungry SUVs that are too often sold to people who don’t really need that kind of brawn. This Japanese automaker still offers just one QX model here in Canada, the QX56. It’s equipped with a 5.6L V8 that produces 400 hp and 413 lbs.-ft. of torque. The only transmission available is a 7-speed automatic. If you need this kind of beast, it’s an excellent choice.