Chris Friesen wrote:
Doug Winterburn wrote:

Some of the "really big" vehicles do pretty well. My '04 Silverado
2500 Duramax diesel (6500 lbs) gets 21 mpg highway at 75mph and
14.5
mpg towing a 10,000 lb 5th wheel at 65 mph.

What's the criteria for "pretty well"? A smaller vehicle could get
twice that mileage on the highway (but of course couldn't pull the
5th
wheel).

But how much smaller does it have to be to get twice that mileage on
the highway?

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