average height of a motorhome
- A Class A Motorhome, the largest and most luxurious of all RVs, has an average height of 10 feet, and can range from 21 to 40 feet in length. This RV typically requires a garage with a clearance height of at least 14 feet, and 45 to 50 feet in length depending on how much additional storage you wish to have. A Class C Motorhome, which has a distinctive cab-over bunk, has an average height of about 10 feet, and can range from 21 to 35 feet in length.