Class A, B, and C motorhomes differ in size and construction. Class A is the largest, up to 45 feet long, with bus-like dimensions. Class B is the smallest, 17 to 24 feet, built on cargo van platforms. Class C falls in between, 20 to 33 feet, on cutaway van or truck chassis such as Chevrolet 4500, Mercedes-Benz Sprinter, or Ford E-450. The choice depends on camping goals: larger motorhomes limit access to national park campgrounds and are harder to drive in cities, while smaller ones offer better maneuverability and fuel economy (15–22 mpg for Class B, 8–13 mpg for Class C, single digits for Class A) but less living space and fewer amenities.
