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Do you reset after every fill-up? With my current BMWs, the MPG average reflects the most change after reset/fill-up then stays pretty static as you are driving within your MPG range (your city & highway driving ratios). Unless you change something drastic (like drive on track for an extended period that has a very low MPG over a long time period), mathematically you will maintain a tighter range as time increases.
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2011 F25 X3 2.8 (in service)
2009 E90 328i (retired)
2007 E92 335i (retired)
2005 R53 MINI Cooper S (retired)
2002 E53 X5 3.0 (retired), 1999 E46 328i (retired)
Last edited by flyga3; 05-14-2007 at 04:30 PM..
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