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      01-31-2013, 05:41 AM   #92
AshyLarryMP
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Drives: 2011 MW E92 ZCP DCT
Join Date: Nov 2012
Location: San Diego

Posts: 403
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When I fill the car from from empty it's about 16 gallons. So from full to 1/4 tank is 12 gallons. Gas weighs about 6 pounds a gallon. 12 gallons x 6 lbs/gal = ~70 lbs. I don't notice the weight difference from full to a 1/4 tank, in this car. However, I have no doubt that a lighter M3 is faster, more agile, and has better fuel economy.

Has anyone done a 1/4 mile run with a full tank vs an empty tank back to back?
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