Attached is some data I compiled on our 2004 Chevy Aveo Hatchback over a year of fillups. I lived in NJ at the time. Although I am no scientist, I did note a couple of trends:
-AAFES gas seems to deliver less MPG when compared to BP, Exxon, etc.
-weather definitely affects gas mileage
My overall average was 28 MPG and most city driving was less than ten miles per day and highway was mostly trips up and down I-95 from VA to NJ.
Hope this helps!
28mpg overall is not bad at all
Although i dont see an attachment? I 100% agreee with the gas choice being crucial. Although i have no idea what aafes stands for, BP, SHELL and Sunoco deliver much better performance in mpg than sheetz, getgo (our local "cheap" brands even though the ga is the same price..)
Originally Posted by petrified.rabbit
Can you all see my results? I'm having trouble figuring out how to post my excel spread sheet--I may have to cut it up into several posts.
Its probably easiest to take a screen shot and post that. That way everyone doesn't have to download your spreadsheet.
Please see the attached screen shots. Thank you
Please see the attached screen shots. Thank you
The "devil is in the details' and the problem with your findings is with the word "mostly". When you combine city and highway driving at all, as well as cold weather vs. hot weather driving, the results are 'all over the map' : meaning not statistically significant.
You didn't mention whether your car is an automatic or a manual. But if it is an automatic, then your results are typical and normal. Which means there is nothing wrong with you or the car - and the car IS what it IS, and not subject to change.
I have a scan gauge in my car ('09) since it was new. Having a scan gauge is one way to get highly reliable MPG data. In warm weather it will get 40 MPG in exclusive highway use, if all city driving is excluded (meaning driving at constant speeds of over 50 MPH with no stopping, until refueling). Unfortunately our car is usually used 98% of the time in local commuter traffic, at speeds of under 40 MPH. In winter, with cold operation and typical short trips of under 10 miles we can never get much better than 22 MPG, no matter how hard we try. That's nature, that's winter, that's traffic - all unavoidable. Anything in-between or any combination of highway-city is a blend of factors that doesn't really tell us anything meaningful - because it is much too variable.
Once you leave the highway, (as well as with winter driving in general) your MPG goes into the dumper. That's the Aveo experience.
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