My current car is a 2007 BMW 320d Wagon. With the rear seats folded down I can fit my bicycle in the interior with only removing the front wheel. I also have a German style trailer hitch rack that holds two bicycles that I find more convenient at times but it is less secure than inside. It gets roughly 1,000 km per tank which is very nice and loves the autobahn. My next vehicle will probably be another small wagon and definitely a diesel.
Shawn