My goal is to hit 30 MPG in my Tempo, but so far the best I've ever done was a 26 MPG tank. Before installing the rear undertray and diffuser, I drove without paying attention to mileage and got a 23 MPG tank. The new EPA combined is 21, so it seems my modifications have helped to a degree.
But a +100 mile daily commute? Ouch. My commute to and from school is 40 miles daily, with 35 miles on a 55 highway and 5 miles in city traffic.
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