MPG for Various Class A Motorhomes

Bill.Satellite wrote:
I get between 5 and 6 (OK, 5.5) no matter how fast I drive. Now, I have to admit that I have never driven 55 for any length of time so mostly 62 to 72. I would rather poke my eyes out than poke along at 55! Even if it were the difference between 5 at 70 and 7 at 55 MPG I would not never choose 55. Let's do the math. An extra 2 MPG over the average 10,000 miles driven by RVer per year. That means you get to drive an additional 2 miles for every gallon of gas used. 10,000 miles divided by 7 equals 1428.6 gallons of gas. 10,000 miles divided by 5 equals 2000 gallons of gas. That's a 571 gallon savings over the course of a year. Maybe $2000/year savings but it took you an extra 666 hours to get there. It's about balance. $2000 is a lot of money but time has value as well. I like to "be there" more than I like "getting there".\
YMMV!

I think you're not doing the math quite right (or at all) for the time it takes. 10,000 miles at 55 mph takes about 182 hours; at 70 mph, about 143 hours. In practice, of course, both times will be longer since it's impossible to spend all one's driving time at cruise speed and none poking around towns and waiting at stop lights and so forth. 40 hours is some time, to be sure, but it's an order of magnitude less than 666 hours.