What is your average MPG

[987gator]

For an 05 987: Pre 10% ethanol in all central florida fuel - 23 to 24 mpg mixed highway / city driving. 29.5 mpg on an Atlanta to Orlando trip, top up, 75 mph tp 80 mph.

Now with the 10% ethanol fuel - 20 to 21 mpg mixed highway / city driving. I have not done a road trip, but right after fill up, on a 10 mile highway stint at 75 mph the OBC noted 27 mpg.

It may be a coincidence, but I think the ethanol blend has robbed some fuel efficiency.

[rick3000]

2.5L Boxster
100% Highway 30+ MPG
100% City 14-18 MPG
50/50 22-24 MPG

I reset my MPG once on the freeway, and it showed 46MPG for a few minutes until I got off the freeway. It made me feel like I was in my sisters Mini that consistently gets 36 MPG.

[pbanders]

Originally Posted by 987gator

For an 05 987: Pre 10% ethanol in all central florida fuel - 23 to 24 mpg mixed highway / city driving. 29.5 mpg on an Atlanta to Orlando trip, top up, 75 mph tp 80 mph.

Now with the 10% ethanol fuel - 20 to 21 mpg mixed highway / city driving. I have not done a road trip, but right after fill up, on a 10 mile highway stint at 75 mph the OBC noted 27 mpg.

It may be a coincidence, but I think the ethanol blend has robbed some fuel efficiency.

Ethanol has a lower energy density than gasoline, hence the lower mileage.

I generally get 19-20 mpg from my '03 2.7L w/Tip in mixed city/fwy driving. However, given gas prices, I tried soft-pedaling it on the last tank, keeping it to 75 mph on the fwy (instead of 90 mph), and using my cruise control. All that brought me up to 22 mpg - not sure it's worth it.

[edevlin]

My 19-year-old son and I drove from Virginia to Florida last week. The Boxster was stuffed, both trunks were completely full. I was pleased to get 28 mpg on the highway with the top down on our base 2000 car. We held the speed at a pretty constant 76mph. I cannt seem to force myself to drive through a tank of gas with the top up just to check the top-up mileage.

Ed

[kyle986driver]

Last time I filled up I reset my trip meter and My low-fuel light came on this weekend, I grabbed a gas can and decided to re-inact a seinfeld episode and drive until I ran out. I made it 330 miles...weeeeelll more than expected. I calculated I got 19.4 mpg...not good compared to you guys but keep in mind I heal toe downshift everytime, as well as floor it up to the speed limit everytime. My gas gauge needle had stopped moving 30 miles before I ran out!

[Paul]

I get about 22 in the twisties, 25 driving to work, and 29 driving to Parades with the car fully loaded and the A/C on.

[PSL-Boxster]

i get about 400 miles to each tank- if i dont feel the need for speed that is

[Wingnut2u]

16.5 mpg...It's my wife's car and is driven 90% city, can you tell she has a lead foot and likes to drive fast?!

Update it is now 16.7 woohoo!!!!