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sato4000's avatar
sato4000
Explorer
Jun 19, 2014

Driving with the generator on

Just curious if anyone knows the difference in MPG when riding with and without the generator on. Has anyone done any measurements on the gas mileage they get?

Thanks
  • So you can run with the AC on and the kids can use the playstation.
  • I'm from Florida, and most trips, most of the year involve using the air conditioner. I was told way back in 1995, when I bought my first Class C that it was more economical to use the generator to run the roof AC than it was to run the dash AC. I was told that a generator will use around .7 gal per hour. I almost always use the generator for air and not the dash air. I have noticed that when I was not using the dash air, the engines on all 3 of the class C's I've had ran a few degrees cooler.
  • The generator will use about or less than 1 gallon per hour. So if you are driving 60 MPH in the mountains and getting 6 MPG, that is 10 GPH and add the generator's 1/2 to 1 gallon and you will have a total of about 10.5 - 11 GPH.

    If you are getting 8 MPG and going 60, that is about 7.5 GPH, and going to 8 GPH will mean you are getting slightly less than 8 MPG, perhaps 7.5 MPG.

    Really if you are comfortable, that is what it is all about. So what if it costs another $2 per hour to drive the RV?

    Fred.