I can recommend Nissan Murano belive it or not. We are getting 22 m/gallon in it consistantly, when a Highlander hybrid gets only 23-24. We were looking at it and decided that it is not worth it.
You can easily put two bikes inside a Murano. But we also have 3 dogs and decided to get a bike rack. Check this baby out: http://www.1upusa.com/1upusarackhome.htm
It is sweet. Tt takes only 20 seconds to set the bikes on it.