Our 378 has averaged 6.7 to 7.2 over its life thus far, that's in mountains, on the flats, interstate and secondary roads. Sounds like your running about average. I foolishly thought my mileage would go up as the engine broke in, wrong. We do tow a vehicle and have for almost all driving. It's not great but it is what it is.
JimF
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JimF, CWO, US Army Ret, 100% DAV
2011 Georgetown 378TS
2008 Dodge Caliber Toad
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