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low gas mileage

  1. Mustang EcoBoost Discussions
    Ever since I've had the eco, my gas mileage has always been around 14-15 miles per gallon. The only time it really goes higher than that is when I'm on the highway. I live in Woodbridge Virginia, and there's lots of traffic congestion so that may be a factor but I'm still not sure if that's a...
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