One thing I have noticed about my X3 is that it is very sensitive to tire pressure. A pound or two will affect my mileage. Around where I live my trips are usually around 20 miles of hilly 2 lane driving with speeds around 45 MPH. I average around 32 miles per gallon driving in sport mode. The best I've ever gotten was on a road trip to East Texas I averaged 39.7 miles per gallon. I never use ECO mode.
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Doug
2019 BMW 430 XI Grand Coupe, White, Black leather interior
2016 BMW X3, 28d, Mineral White metalic, Oyster Nevada leather interior.
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