Newmar Kountry Star 4045

Name: Newmar Kountry Star 4045
Brand: Newmar

Class Abuilt 2020–22Better build tierPatient search on the used market

WHAT ONE COSTS

$187,100est. used (2022, 4 yr old)

Sticker was $312,015 in 2022. Out of production since 2022, so the used market is the only way to buy one. Estimate assumes a 2022 unit.

THE SPECS

Length40.8 ft

Height (incl. A/C)12.8 ft

Width8.5 ft

Interior height6.9 ft

GVWR38,000 lb

Dry weight29,400 lb

Sleeps6

Fresh water105 gal

Grey water65 gal

Black water45 gal

Air conditioning30,000 BTU

Fuel100 gal

Engine / chassisCummins B 6.7L 360 hp diesel pusher · Freightliner XCR

GeneratorCummins Onan 8.0 kW diesel

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

WHERE PEOPLE SLEEP

1× Rear king bed(Permanent)72×80
1× Hide-a-bed sofa(Convertible)—
1× Sleeper dinette(Convertible)—

HOW IT'S BUILT: 4/5

WallsLaminated fiberglass

FrameSteel

RoofWalk-on

UnderbellyEnclosed

Newmar (Better tier): Newmar

YEAR BY YEAR: WHAT CHANGED

YEARS	GVWR	DRY	MSRP
2020	37,500 lb	31,100 lb	$312,015
2021–22	38,000 lb	29,400 lb	$312,015

2020Introduced
2021GVWR 37,500 → 38,000 lb
2023Discontinued

FINDING ONE

Patient search: weeks of watching, and probably some travel. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Living-room-forward 40 ft plan; retired when 4068/4070 arrived for 2023.

OTHER KOUNTRY STAR FLOORPLANS

3354 · 28,000 lb · sleeps 4 3355 · 29,500 lb · sleeps 6 3412 · 33,400 lb · sleeps 6 3418 · 33,400 lb · sleeps 6 3426 · 33,400 lb · sleeps 4 3509 · 32,000 lb · sleeps 4 3510 · 32,000 lb · sleeps 6 3623 · 32,000 lb · sleeps 4 3624 · 32,000 lb · sleeps 6 3709 · 37,500 lb · sleeps 6 3717 · 37,500 lb · sleeps 6 3720 · 29,500 lb · sleeps 4 3721 · 29,500 lb · sleeps 6 3907 · 32,000 lb · sleeps 4 the whole line →

Find one for sale

Live listings for the 4045 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 Kountry Star line ↗

Is the 4045 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 dealer and aggregator listings, retrieved 2026-07.