Gas Mileage Experiences?

[JCL12]

I drive an 01 regular boxster with tiptronic.

It is rated for 18/25 (city/highway)

I can get a little over 27.1 MPG on pure highway driving - typical speeds high 70's with a good bunch of 80's and high 60's mixed in with occasional 90-99+.

I am guessing with consistent 68-72mph, I could crack 28 MPG. I think porsche lies about the mpg (or assumes more aggressive diving styles)

[986sport]

I looked up Boxster gas mileage on google, and got a British consumer review on what appears to be the 07 Boxster, 2.7L, 5 speed. They listed 20.9 mpg city, 40. mpg highway, 29 mpg average. I wonder if the Euro Boxsters are more fuel efficient? Mine is a US model from the VIN, made in Finland.

Another factor is the on board computer, which constantly reads mpg since last fillup. That could make you drive more fuel efficiently as you are monitoring it continuously.

[wanna986]

Originally Posted by 986sport

I looked up Boxster gas mileage on google, and got a British consumer review on what appears to be the 07 Boxster, 2.7L, 5 speed. They listed 20.9 mpg city, 40. mpg highway, 29 mpg average. I wonder if the Euro Boxsters are more fuel efficient? Mine is a US model from the VIN, made in Finland.

Another factor is the on board computer, which constantly reads mpg since last fillup. That could make you drive more fuel efficiently as you are monitoring it continuously.

U.K. would be a bigger gallon- approx 4.5 litres- U.S. is 3.8

[abacusnw]

When I fill the tank and drive on the highway at consistant speeds via the cruise control, I get 32 MPH. BUT - when my tank goes down to less then half, the milage drops to 26-28. If I fill up before the tank goes below 1/2 I can get 32 MPH for as long as I keep the gauge over 1/2.

I am reading the milage off of my trip odom and using the fuel pump to meter a full tank until the nozzle goes auto off.

This is a consistant and repeatable event. Confuses the hell out of me.

[cvhs18472]

Brucelee, As long as you don't say it is road racing it is OK to do 99+ on the highway without being called childish?