I wonder if this person knows that the car uses premium and why they're not complaining about that. I use my Crossfire as my dd, and it's not bad at all. Tires last me over 50,000 miles so even if they're more expensive they've only gotten replaced once in the 4 1/2 years I own the car. 74,000+ miles and counting.
+1. I mean if your looking to be thrifty a German sportscar is not a good option. Something Japanese would be the way to like a Miata