Motorhome Gas Mileage Chart. For a Class B RV it is. While there are exceptions for each class on average Class B motorhomes or Camper Vans are the most fuel-efficient RVs with an industry average of 18-25 miles per gallon.
It doesnt have a large fuel tank like the Class A or Class C but it makes up for it with its fantastic fuel. A Class B RV averages 18 to 22 miles per gallon. RV Class A B C Gas Mileage Comparison RV Gas Mileage Chart.
The Class C RV sits right between the Class A and Class B RVs.
Use our simple fuel cost estimator to help you understand the impact of higher gas costs on your pocket book. While a Class B gets a more thrifty 11-13 litres100 km 18-25 mpg or better. A Class B RV averages 18 to 22 miles per gallon. Larger RVs class A will consume the most fuel.