I have seen where folks are getting some pretty good mileage with their boxsters, in the low 30mpg-range with highway driving, especially with the 2.5L engines. I am interested on what the absolute worst mileage you may have gotten on a tank of gas, not counting tracking or racing the car.
I just went through a tank of gas mostly city and backroad spirited driving. If my calculations are correct, I only got 15.3 mpg, which is an all-time low for me. I don't remember for sure, but something like 16-17 mpg was my previous low for mileage. I think I have a long road trip comming up next week (1,600 miles), I will take it easy and see what I can get on the highway.
Ed