Newmar Mountain Aire 4595

Name: Newmar Mountain Aire 4595
Brand: Newmar

Class Abuilt 2025–25Better build tierScarce on the used market

WHAT ONE COSTS

$612,500est. used (2025, 1 yr old)

Sticker was $850,704 in 2025. Out of production since 2025, so the used market is the only way to buy one. Estimate assumes a 2025 unit.

THE SPECS

Length44.8 ft

Height (incl. A/C)13.2 ft

Width8.5 ft

Interior height6.9 ft

GVWR54,000 lb

Dry weight44,200 lb

Sleeps5

Fresh water105 gal

Grey water80 gal

Black water60 gal

Air conditioning45,000 BTU

Fuel150 gal

Engine / chassisCummins X15 525 hp diesel, Allison 4000MH, Spartan K3 tag axle

GeneratorCummins Onan 12.5 kW diesel

A missing row means the maker never published that figure: unknown, not zero.

WHERE PEOPLE SLEEP

1× king bed(Permanent)—
1× convertible dinette(Convertible)—
1× sofa sleeper(Convertible)—

HOW IT'S BUILT: 4/5

WallsLaminated fiberglass

FrameSteel

RoofWalk-on

UnderbellyEnclosed

Newmar (Better tier): Newmar Mountain Aire

YEAR BY YEAR: WHAT CHANGED

2025Introduced
2026Dropped

FINDING ONE

Scarce: months of watching; be ready to fly and drive it home. Why: only one model year; priced at the top of its maker’s range. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

One-year 45-foot plan for 2025 only.

OTHER MOUNTAIN AIRE FLOORPLANS

3823 · 54,000 lb · sleeps 5 3825 · 54,000 lb · sleeps 4 4002 · 54,000 lb · sleeps 5 4018 · 54,000 lb · sleeps 5 4118 · 54,000 lb · sleeps 5 4360 · 44,600 lb · sleeps 5 4361 · 44,600 lb · sleeps 5 4364 · 44,600 lb · sleeps 5 4369 · 44,600 lb · sleeps 5 4372 · 44,600 lb · sleeps 5 4501 · 53,000 lb · sleeps 5 4503 · 53,000 lb · sleeps 5 4513 · 54,000 lb · sleeps 5 4519 · 54,000 lb · sleeps 5 the whole line →

Find one for sale

Live listings for the 4595 on the big marketplaces. Each search opens pre-filled with this exact floorplan:

RV Trader ↗Camping World ↗FB Marketplace ↗Google ↗

Inventory varies by site and day. Slim pickings? search the whole Mountain Aire line ↗

Is the 4595 your #1, or just a spec sheet?

These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about. Set your priorities as sliders, switch on your hard limits, and watch the whole market re-rank around them. Every exclusion explained, every margin shown.

See where it ranks for you →

Data compiled from manufacturer spec sheets, retrieved 2026-07.