I thought that I would not care about MPG in the RX8 but
I have driven 1571.6 miles and put 108.6 gal which is average of 14.5 MPG. Two tank full were freeway trips (18.7 & 19.1 MPG).
I admit that I run the air conditioner and stomp on it once in awhile (well maybe twice a day) and drive 70-90 MPH on the freeways but I have made an effort to go slow to see what the MPG should be and got pretty much the same 14MPG.
Yes I took care during the break-in. The break-in MPG was 12.7 to 14MPG.
I really like the RX8 but I may consider returning it and then buy one when things are more consistent. My Vin JM1FE173040106438.
From reading the forum, other are getting much better MPG. What is your experience?

First, congrats on your new car. Second, there's a lot of threads discussing this so your thread will probably be shut down by the moderator. But, if I get in under the wire: Your experience sounds pretty typical, though there is a separate camp of people who are getting over 20 mpg. No one yet has explained why some get over 20, the others are around 15. Like you, if I return my car it would be for this reason, not because of the power thing.

It also looks like when you get over 2000 miles, then mpg will begin to creep up. I just started getting 17.5 (I have 2150 miles on my car.) Still not great. It needs to get around 20 before I'll be satisfied. Keep us posted.

Perhaps better to ask in the ongoing threads :)

This is already being discussed in several threads. Closing.