Class C Gas Mileage

2006 Winnebago View - Sprinter

17 to 19 mpg -- 60mph

Pulling the car 6mpg. On the flat no toad we got 8.7. In the mountains, no toad 7.

Your best mileage can be had in California. First drive to the top of Mt. Whitney, at 10,000 ft. ASL. Then coast to Death Valley at 282 ft. BSL. 150 miles downhill. Of course, driving to the top of Mt. Whitney is probably going to burn some gas, but coasting 150 miles on a thimbleful of gas is bound to be a Class C record.
You'll be a late night TV star. :)
Obviously, I have too much time on my hands.

1997 30 foot Coachmen Santara with Ford 460 = 6.3 to 7.0 mpg all while driving like a wuss.

7 mpg. We're heavier than I ever thought, toad's heavier than I thought and it's a 31-ft with the full "C" cabover. E450 means a steeper gear ratio and that reduces highway mpg. With the toad we're just a pinch under 18K pounds. But it handles anything it comes up against, effortlessly.

1988 27' Jamboree, 460cid, 4-barrel carb, run between 60-65mph.

During summer, tow 3 watercraft (2-seater, 3-seater, stand-up) along with 8 additional 5-gal cans of fuel; probably close to 3000lbs. 6.5 MPG.

During winter, tow 20' enclosed trailer with 4 ATV's & 1 motorcycle along with 5 additional cans of fuel; around 4000lbs. 6.5 MPG.

It is what it is, I don't do this because it's economical, and the difference between 6.5 MPG and 7.5 MPG? Not worth losing sleep over; I burn more fuel in the toys once I get there than I do in the MH getting there.:W

JTCHess wrote:
We had a discussion like this in an earlier thread concerning the Chevy chassis. I learned that factors that impact mileage include: motorhomes with a bunk up front (they have the aerodynamics of a brick and are thus referred to as one), motorhomes longer than 25 feet (greater weight), and how fast you drive. Before purchasing mine I researched this forum for the mileage I could anticipate and expected mileage around 11 mpg but in reality the best I have ever achieved is 8.3 mpg. The reason for the discrepancy is that when talking mileage folks on the forum are not comparing apples to apples. Sure I hear of folks claiming to achieve 15 mpg with their class C, but it is certainly not one of the larger class C's with a cab over bunk. BTW - I have a 2008 Outlook 31C on a Chevy Chassis with a 6.0 V8 and generally keep my highways speeds to 60-65.

The biggest reason you won't get the MPG you'll read on a forum is that most of the numbers given are fibs, whether intentional or just selective memory. I'm not a psychologist; I can't explain it. If you read enough posts you can get a feel for the truth, though. I would say that your 8.3 is actually pretty good, and if it was a Ford it would more likely be 7.5-ish.

We had a discussion like this in an earlier thread concerning the Chevy chassis. I learned that factors that impact mileage include: motorhomes with a bunk up front (they have the aerodynamics of a brick and are thus referred to as one), motorhomes longer than 25 feet (greater weight), and how fast you drive. Before purchasing mine I researched this forum for the mileage I could anticipate and expected mileage around 11 mpg but in reality the best I have ever achieved is 8.3 mpg. The reason for the discrepancy is that when talking mileage folks on the forum are not comparing apples to apples. Sure I hear of folks claiming to achieve 15 mpg with their class C, but it is certainly not one of the larger class C's with a cab over bunk. BTW - I have a 2008 Outlook 31C on a Chevy Chassis with a 6.0 V8 and generally keep my highways speeds to 60-65.

pnichols wrote:
Ron,

Just as a gas mileage measurement accuracy reminder - are you still trickle-filling 6 more gallons (after automatic shutoff) into your fuel tank at each fillup? ;)

You just kill me. :)

Adding: Actually how the tank is top'd off doesn't matter as long as you do the same both at the beginning and at end of the vacation. How you fill the tank in between during the trip doesn't matter. On occasion you won't fill the tank as some gas stations limit your credit card fuel purchase. It's all about total miles driven and total gallons purchased. Then calculate off those totals to get your trip average.

1994 E350 29'
Tow Jeep Liberty 4 wheels down, 7.5 MPG 65 MPH
No Tow...8.5 MPG 65-70 MPH