Alright, my mistake.
I guess all the guys I know with 200k miles aren't taking care of their cars. Scott there says 134+
from my experience Berenice, maintenance is expensive. Hard to get around that, you end up paying a preminum for the german car. My 30k servicing (oil change, spark plug change, filter, check over the car stuff) was ranging between 1100 to 500 dollars. Mind you, this is just for checking it out.
As for the gas milage, I get abou 260 miles on a 15 gallon tank for my 2000 Boxster. This is mostly back and forth from work, so it not exactly highway nor is it in the city driving. So everyday driving, you should expect about 17-18 MPG
Good luck and I hope you get to drive the car a bit. Its more than the numbers