Class B motorhomes

Class B RVs are built in a van platform. In the past they were built on passenger van chassis (right) but Eurovan chassis have become more common as their market share increases.

Class B motorhomes present several design challenges that make the cost surprisingly high. First, the RV amenities are built within the existing chassis and skin, which limits access for workers and fitment.¹⁾ Second, the available space is much smaller than on class A or class C.

The payoff is a more durable, leakproof motorhome with higher build quality.

PRO
- highly maneuverable, can be parked in normal parking spaces
- best MPG of motorhomes
- highest quality build
- best leak resistance due to steel body
CON
- expensive
- most expensive per square foot of living space
- can be tight for 2+ people
- limited standing space; often around 6'

dropped floors

Some Class B vans have dropped floor sections that may increase effective standing room.

RoadTreks (1998 - 2003²⁾)“have a 3” deep pan between the frame rails about 5' long by 32“ wide”.³⁾. This is a drainage section for the in-aisle shower. When not in use the dropped floor has a cover so it looks like a normal floor. Taller folks may leave the pan exposed.
Dodge Xplorer 224 models had a deeper dropped section near the side door, perhaps a foot deep.⁴⁾

class B+

These motorhomes blur the lines between large class B and small class C. They often have somewhat widened fiberglass body panels but lack the cabover sleeper that defines a class C.