$808,465
The Newmar Mountain Aire 4521 sits at the top of the diesel pusher world, combining Newmar's reputation for premium build quality with the kind of storage capacity and road presence that long-haul travelers appreciate. Owners consistently highlight the power, drivability, and upscale interior as standout strengths. As a discontinued floor plan in the current Mountain Aire lineup, the 4521 has a devoted following among buyers who seek it out specifically, and a thorough pre-purchase inspection is a smart step given the complexity of a coach at this level.
Other class a motorhomes floor plans (around 44 ft 10 in, near $808,000), similar in size and price to the Mountain Aire 4521.
