[ejm3]

I average about 25-26 MPG in mixed driving probably slightly skewed towards the highway in my stock '12 135 convertible (mostly with the top down and AC off).

It very much depends upon how and where you drive. If you putz around down driving it like you stole it then you will do much worse.

I have fewer than 5k miles on mine and not a lot of long trips but on my way back from Cape Cod (~220 miles) a month ago I got around 29 MPG top up AC on most of the way. I was pretty impressed with that.

Overall I am happy with the mileage I get in my normal daily driving. However I also probably drive it more conservatively than many of the people on this forum.

As noted the car has a teeny-tiny gas tank so expect frequent fill-ups.