First trip in to work this morning was a good test. It was a brisk 16F out today. The Mirage did quite well coming in at 44.3 mpg this morning. I wasn't really trying hard, and I idled a bit trying to get my scangauge working to no avail. It wouldn't connect.
I also got a nice shot once at work with the new wheels. Sadly, they do rub if you turn too sharp, so I have to be careful until I can get new OEM sized tires.