Quote:
Originally Posted by MarkEHansen
Hmmm, should I worry there's something wrong with my Duramax? I haven't gotten above 14 yet. Mostly freeway (commute to/from work) with a little city driving.
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Like a good whiskey or beautiful woman, it'll get better with age!!
Also some computer calculations on some vehicles are very optimistic. The only true way to figure mpg is miles from the odometer divided by gallons into the tank.
Some time back there was a fellow parked next to me towing a good sized 5er that I ask about the fuel mileage on his diesel, won't mention the brand he was driving & his comment was "which one of those lying SOBs have you been talking to that claim 12-15 mpg towing & 20-22 mpg unloaded, cause the best I can do is 9-11 towing & 14-17 mpg unloaded!". That second set of numbers are very close to what I've gotten from my last 2 diesels & I'm betting they're about a good honest average for anyone driving a diesel truck regardless of brand.