I normally lurk here, so hopefully it's okay for me to post.
We have a Marathon and it fits in the Prius okay. In the most reclined position, it's really best in the middle. In the upright position, it's fine in any of the three back seats. If DH and I weren't both really tall and were willing to move the front seats up to anywhere but the farthest-back position, it would fit behind the two seats in the reclined position just fine.