Hi, here are my two trusty bike racks. I'd happily recommend the Graber, it seems to fit any car, is sturdy and stable, carries three bikes, not too much of a faff to fit.




The only issues are the top mounting point is resting on the glass (although there is steel frame underneath it) and the straps might damage the rear spoiler I've fitted.
The other is a Paddy Hopkirk tow-ball rack. I haven't had a car with a towbar for a few years, but I far prefer this system because it's so easy to put on and off and doesn't take up much room in the car when folded.
I never use a rack on my Panda, though. My bikes go in behind the front seats without removing a wheel (
more here).
I have a 23.5"/60cm road bike with 700C wheels, and mountain bike with 26" wheels. My mountain bike is non-suspension which I'm sure makes it an easier fit.

If I really had to carry bikes on a rack often, I would fit a towbar like
this one.