Hmm. There are similar threads in the Avis and especially Hertz forums, but apparently none here in the National forum? I thought we had one a while ago.
In any case, 2012 Chevrolet Sonic, picked up from Seattle Downtown with 20,047 mi, returned to Boston Logan with 23,286 mi. It was their only compact, I got a decent paid one-way cross country rate when I booked a year ago, and I'm not one to switch cars out unnecessarily, especially since Seattle Airport was out of my way.