Rear bath, bath and a half
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2020 Newmar Mountain Aire 4551
Used
Listing price
2020 Mountain Aire 4551
Other floor plans with a similar body style, feature mix, and price range, prioritizing other manufacturers and brands.
Newmar's industry-first Comfort Drive™ adaptive steering is one of those features you don't fully appreciate until you've driven a 45-foot coach through a crosswind, and the Mountain Aire 4551 pairs it with OnGuard™ collision mitigation and Mobileye® lane tracking for a driving experience that punches well above what most Class A coaches offer. Inside, the bath-and-a-half layout puts a fully enclosed midship bath (with a 44"x30" skylight shower and Aqua Miser system) between the living area and the rear, so the bedroom stays private without sacrificing convenience for guests. The King bed, stacked Splendide® washer/dryer, and all-electric induction cooktop point squarely at full-timers, while the Italian leather sofas, maple cabinetry, and Newmar's signature Full-Paint Masterpiece Finish make clear this is a coach built to impress at the campsite as much as on the road. Starlink, a Bose® soundbar on the exterior entertainment center, and optional Lithionics® lithium battery systems up to 960 AHR round out a feature list that leaves very little to add.
Length
44 ft 10 in
Sleeps
8
Fresh water
105 gal
Many factors play into a unit's listing price and what you should pay. This guide provides a ballpark estimate, but it does not factor in your exact scenario or how different listings are equipped.
$309,900 – $429,995
This unit has been on the lot for 61 to 90 days.
This unit is ranked 1 of 3 by asking price in this group.
The listing price on this unit has changed 1 time.
See the complete price timeline and the rest of this unit's pricing insights.
RV Select
Seffner, FL
This 2020 Newmar Mountain Aire 4551 is one of those coaches that genuinely turns heads in a campground — and at nearly half its original $644,649 MSRP, it's an extraordinary entry point into full-time luxury RVing. Newmar's reputation for premium craftsmanship shows throughout, from the solid construction to the upscale finishes that owners consistently describe as feeling more like a high-end home than a vehicle.
The rear bath layout gives the living space up front a generous, open feel, and the bath-and-a-half configuration is a real-world convenience that makes a noticeable difference when two people are getting ready at the same time.
Multiple owners have called this their best coach ever, praising how confidently it drives and how well it holds up for extended or full-time use. Located at RV Select in Seffner, FL, this one is ready to walk through in person.
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