Quote:
Originally Posted by andrewwynn
I get the best mpg at about 70-73 level highway. The 3.0 seems to have maximum efficiency about 2500 rpm in my case. On the afformentioned trip, 2/3 of the trip is 70 speed limit but also with plentiful elevation changes.
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I found 2500 RPM to be the magic number also. One trip from San Antonio to Arlington yielded 26mpg. It was about 65 degrees F so no A/C was needed, and I had a slight tailwind of about 8mph. I typically observed 22-23 mpg as long as I kept speed below 75mph on other trips.
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2016 F15 x35i
2014 F32 428i
2004 E46 325i sold at 123,600 miles
2002 E53 3.0 sold at 388,801 miles
2001 E46 325i sold at 66,000 miles
1970 Firebird Under restoration
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