I would agree that different vehicles drop fuel mileage at different rates when towing, but I would disagree with one statement that doug made about the real world ratings being proportional to the advertised, I have seen several cases of this not being true, I have been a Gm tech for 18 years and have seen several cases to proove my point. Thats why its always nice to talk to a honest owner and get real feed back. I know this can be difficult.
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MacRae, 21ft
2016 GMC Yukon SLT
St.Albert Alberta
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