Class A V-10 mileage

I figure when I have the toad along for the ride, and since it's a fully drivable self powered vehicle, my mileage is double to 15 or so. And since there is usually two of us in the coach I get another double taking the rate up to 30 MPG.

Day dreaming helps pass the time until the next outing.

I have driven the same MH in my signature a little over 100,000 miles and have tracked every fill up over the last 15 years manually. I tow a 2500lb Toyota Corolla most of the time. I don't notice any MPG difference towing vs not towing. Added headers and FF muffler. No difference. Added CAI sans cat. No difference. Advanced base timing from 4 degrees BTC to 9. Slight difference. Each mod improved performance but not MPG. Performance went from 19 sec to go from 40-60 mph down to 12 secs. Went from down shifting at the slightest hill to staying in high gear in all but steep hills out west. There were several things that I observed that increased my MPG slightly. Keeping my speed between 55 on backroads and 62 on the highway increased mpg from 8 to 8.5 . Adding a vacuum gauge and keeping vacuum above 10 in HG. Also increasing speed when approaching a hill then letting off the throttle to keep it in high gear. I know when it will shift by watching the vacuum gauge. This increased my mpg to 8.7 mpg. Having said all that I like the increased performance over the mpg gains.

I just finished a 1400 mile round trip, towing an Acadia. SeaBreezeLX F-53. Got 7.2 mpg....

Al

A1ARealtorRick wrote:
So, if well-engineered cars can have 8, 9, and 10-speed automatic transmissions in an effort to maximize fuel economy and enhance overall performance in the process, why can't motorhomes?

Of course they can. Motor homes generally operate at/above/or close to maximum gross weight. Not so with daily drivers. Most motor homes have the aerodynamic efficiency of 3 - 4' x 8' stacked pieces of plywood which they struggle to push through the air at 55 - 75 mph. That's where/why the fuel efficiency goes through the floor. IMO, the number of speeds in the transmission doesn't matter with regard to fuel efficiency. It only makes the driving/towing experience more palatable.

Chum lee

2013 32' Class C towing a Mini Cooper averaged 8.4 over 2 years driving 6,000 miles per year. No real mountains around where I drove it though!

In my old 2002 chassis with the 4 speed, I get 5.5 towing a 5000 lbs trailer, 7.5 when not towing.

I average 7 to 7.5 mpg on a 2000 Bounder towing a 2007 Honda Pilot. I normally run the generator and both a/c's while driving.

Oddly, running the generator likely won't even change your mileage numbers unless you're calculating to a couple decimal places. It only burns around 1/3 GPH and at 60 MPH you're already burning around 10GPH.

I have a Saturn as a toad I get 7 even but then with out still the same.

On my Workhorse 8.1L V-8 (Chevy engine) I once hit 13.8

Of course the 100MPH tail wind pushing me along might have helped :)