Using imperial gallon measure(slightly larger than the US gallon) I get 20 in the city and 30 on the highway.

Stamina - mine? Longest drive I have done is 4 hours to Jasper. Longer trips we take the Camry. Wife could not sit that long in the Boxster.
Coldest temp I have driven in is about -34C(about -30F). Okay everybody flame me for doing that.

Car gets driven regularly throughout the year . 3 years of ownership and it is certainly worth the price of admission. I would like a Cayman but don't want to spring for a CPO one.

And you all have stamina listensing to me!
Cheers, Guy:) Have a great day.

sounds like the 2.5 and 2.7's pay a good dividend if you drive smoothly and keep the revs down.

Wheras the 3.2's well... harder to stay on message.

By the way, does anyone else notice how smooth the engine runs when ambient temps are between 55-60? It's like this is my 3.2's 'zone'.

I drive to work and back as weather permits. I get an average of 22.2 mpg. most of the driving is highway but in NJ that means some traffic.