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I routinely do 550-600 miles a week between Atlanta to Charlotte (and back). Ambient temps of around 90 degrees this summer. My average is around 28-29mpgs with 50 miles of true city driving mixed into the above figures. Best I've seen with my car was 34.3mpg for 500 miles.
I need to clean my air filters, change my oil, change my coolant and see how it improves. Also considering down-pipes and AFE scoops to see if it makes any difference. I get reimbursed for my mileage through work so anything I can do to save on gas is a plus...
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1997 M3 Coupe - BMWCCA I-Prepared #22
2006 M Roadster - 23,000 miles and slowly counting |