Thread: Actual 80mph Interstate MPG
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Old 08-27-2010, 02:38 PM
philcollison philcollison is offline
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Expect 40 mpg with a steady 80 mph on a flat highway. I set the speedo at 74 on my 100 mi commute and get 42 on average. 40 of 100 miles is on secondary roads at 60-65 so a bit better, but you can expect 40 mpg.
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