Aerio SX Hatchback owners are installing this
hitch receiver.
So the question is with the similarities between Aerio SX and the SX4, will this hitch work? It is a class 1 receiver which is appropriate for the 400kg unbraked capability of the SX4. One Aerio owner mentions having to cut into the bumper to install. I'm going to call the company for some info. I'll let you know how I make out ...