I hope you never make the mistake I did, which is to get any kind of bike rack for your car other than a yakima bike rack. You see, this mistake has now literally cost me thousands of dollars. No bike rack has ever performed like the Yakima rack I currently have, and I am not surprised when people tell me the same thing.
You see, the first rack I ever got was a generic bike rack. It was so poorly designed that it would not even attach itself to my trailer hitch, as it was designed to do. I promptly returned it to the retailer who had sold it to me.
My second bike rack was better than the first, but just barely. I actually hooked it up to my vehicle, and then hooked an expensive bike to it. I started driving, and the entire rack fell off my car, with the bike attached, and was promptly run over by a truck. I wish I had gotten my Yakima rack sooner.