Class A fuel mileage

Executive wrote:
I average 42mpg with my setup....your mileage may vary.


32 with the car and 10 with the coach...:B...Dennis

Dennis's point is that there is more to this than just the MH although his average is actually 22 MPG. We usually put as many miles on our car as the MH and I recently bought a car that gets 44 plus the 7 for the MH divided by 2 = 25.5 average.
I can get 10 mpg with my heavy DP (44k lbs) but 45 MPH is too slow for most roads. A MPG without the speed you drive and to a lesser degree your weight is meaningless. My 7 is at 65-67. From the many posts over the years on MPG I'd say a 5.9 Cummins will average 10 mpg at 60 mph.

Ivylog wrote:

Executive wrote:
I average 42mpg with my setup....your mileage may vary.


32 with the car and 10 with the coach...:B...Dennis

Dennis's point is that there is more to this than just the MH although his average is actually 22 MPG. We usually put as many miles on our car as the MH and I recently bought a car that gets 44 plus the 7 for the MH divided by 2 = 25.5 average.
I can get 10 mpg with my heavy DP (44k lbs) but 45 MPH is too slow for most roads. A MPG without the speed you drive and to a lesser degree your weight is meaningless. My 7 is at 65-67. From the many posts over the years on MPG I'd say a 5.9 Cummins will average 10 mpg at 60 mph.

The average of two ratios is not generally the mean of their values. If you drive 50 miles at 50 mph and 50 miles at 10 mph, your average speed is not 25 mph, but 16.6 mph (100 miles / 6 hours). In your case, with equal distances at 44 mpg and 7 mpg, your average fuel milage is about 12.1 mpg.

FIRE UP wrote:
As has been mentioned, "fuel mileage" and "Motorhome" should NEVER be used in the same sentence and or, even post. There is absolutely nothing in the design of a M/H that ENHANCES fuel mileage.

I agree, I think the OP was looking for what he could expect.

Wow! I think some of these responses are rude. No question should be considered dumb or inappropriate if you don't know the answer. Thank you to the people that just responded without their personal opinion on whether we can afford a motorhome or not

Let's see, I get 8.5mpg pulling a car. So at the end of the day with one driver I have a house to live in and a car to drive around at the same place. Not bad having two vehicles at what I figure is an average of 17mpg. I'll take that.

Sorry, I should have said "combined" as the car dealers do....:S.....Dennis

That 5.9 liter ISB Cummins was/is a VERY efficient engine. I would truly think you should get 9-10 mpg towing a light toad and not driving over 65 mph. We have had similar setups and got that. (Much better than the 7.2 we averaged with our 9 liter CAT engine!!)

Ed Headington

Executive wrote:
I average 42mpg with my setup....your mileage may vary.


32 with the car and 10 with the coach...:B...Dennis

My thinking exactly.
Actually I don't know what mileage I get on my MH, I want to go, I pay, - but I get better "mileage" than anyone else that is south of the Canadian border. (I'm old enough to still use MPG - using Imperial gallons:B. My Fusion hybrid gets near 70 MPG!

Or really to confuse this issue, how many liters per hundred kilometers do you get? (makes no sense to me - never liked metric, the higher the number the worse mileage:h

Chris

DrewE wrote:

Ivylog wrote:

Executive wrote:
I average 42mpg with my setup....your mileage may vary.


32 with the car and 10 with the coach...:B...Dennis

Dennis's point is that there is more to this than just the MH although his average is actually 22 MPG. We usually put as many miles on our car as the MH and I recently bought a car that gets 44 plus the 7 for the MH divided by 2 = 25.5 average.
I can get 10 mpg with my heavy DP (44k lbs) but 45 MPH is too slow for most roads. A MPG without the speed you drive and to a lesser degree your weight is meaningless. My 7 is at 65-67. From the many posts over the years on MPG I'd say a 5.9 Cummins will average 10 mpg at 60 mph.

The average of two ratios is not generally the mean of their values. If you drive 50 miles at 50 mph and 50 miles at 10 mph, your average speed is not 25 mph, but 16.6 mph (100 miles / 6 hours). In your case, with equal distances at 44 mpg and 7 mpg, your average fuel milage is about 12.1 mpg.

Since you are correctly pointing out that the average of two ratios is no usually the mean of the two ratios, I will point out that the mean of 50 and 10, in your example is 30, not 25.

As far as expected mileage, we just finished a 7000 mile trip. According to the computer, we averaged 8.6 mpg. But the computer is generous. Dividing the number of gallons used into the miles driven produces an average of 7.925. But that is misleading, also; we had almost 90 hours of generator usage.

Allowing 1/2 gallon of diesel fuel per hour of generator usage, the average miles driving per gallon of fuel become 8.34.

Tom

mowermech wrote:
I would guess 6 to 10 MPG.
IMO, if you are truly concerned about fuel economy, you should probably not buy a motor home of any kind. In fact, I do not believe "motor home" and "fuel economy" should ever be used in the same sentence

x2. If you have to ask. don't get into RVing.