Question: what is the most fuel efficient motorhome?
Answer: Best MPG Class A RV– ... 
Newmar Dutch Star – 8 to 11 MPG. ... 
Thor Palazzo – 10 MPG (up to 12.9 in ideal circumstances) ... 
Best mpg Camper Van (Class B RV) – ... 
Roadtrek Sprinter RS Adventurous – 20 MPG. ... 
Winnebago Travato 59G – 20 MPG. ... 
Best mpg Class C RV- ... 
Winnebago Navion Motorhome – 18 MPG.