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      07-14-2012, 08:49 PM   #8
imom
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Drives: Subaru BRZ ....... Z4MR (SOLD)
Join Date: Oct 2009
Location: Los Angeles

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I did this on the 3.0SI and on my MR...but if you reset the computer...you'll get a really high average...I don't know if it's real or not. I can get up to 28 or 29 MPG readings...but if you don't reset...I bet your average will be much less...or if you drive long enough on the freeway the average will begin to dwindle down slowly. All I know is that the M gets a lot less gas mileage than the 3.0SI.
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