I drove my Swift to Stockton today & got over 48 mpg (no mods). But that's a net elevation loss of over 4000 ft., meaning that on average, the trip was "downhill".
However, on the return trip (re-gaining that same 4000+ ft.) the ScanGauge was reading 45.5 when I pulled into my driveway.
So when I see ads for new cars (mucho money) touting 44 MPG or whatever, I say, "is that all?"
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