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Old 02-05-2017, 07:43 AM   #8
BoomerRoadie
Registered User
 
Join Date: Nov 2015
Location: Fountain Hills
Posts: 103
Bringing back an old post...

I've noticed my gas mileage improving as well. But first...

I drive a 1997 Boxster, so I know many of you have a more powerful engine and different efficiency, but...

My daily driving is about 70% highway 30% city driving. Occasionally it will get closer to 50/50, rarely does is see more than 70% highway time.

I tend to accelerate moderately, get up to speed and cruise just at or slightly above the speed limit (posted 65mph). What is moderate acceleration? I typically shift just before it gets to be really "fun", say above 4500 RPM. Yes I know....that's why I define this a "moderate" as opposed to hard acceleration. At least once a week I will tickle the red line. It's a semi-daily driver.

Ok, now my baseline is out of the way....

I typically have been seeing 25.5mpg average on the tank and often up to 27.5. However, recently I've notice the milage has been ticking upward tank after tank. In fact, I have just a bit more than 1/4 tank remaining and I'm looking at 28.9mpg!

That's NUTS!!

As a result, owning this car seems a bit like cheating because I've got the cake and now I'm eating it!!

Now for a question....

Is the increase in mileage indicative of winter blend gas? Don't think so...shouldn't it work the other way around (summer/winter)? I still use the AC at times in the late afternoon. I live in AZ.

Thoughts?
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