I started looking at diesel, but quit because they are hard to find, and when you do, they are much more expensive. I am looking at RVs from the 1990s to early 2000s. At some point along this...
Many years ago we rented a 26 ft. Class C and got between 4 and 5 mpg so 8 - 9 would be a blessing! The mileage was so bad we had two gas tanks as I remember.