Newmar Kountry Star 3720

Name: Newmar Kountry Star 3720
Brand: Newmar

Class Abuilt 2005–05Better build tierScarce on the used market

WHAT ONE COSTS

$106,500est. used (2005, 21 yr old; from 16 priced floorplans of this line)

THE SPECS

Length37.2 ft

Height (incl. A/C)12.1 ft

Width8.5 ft

Interior height6.7 ft

GVWR29,500 lb

Dry weightnot published

Sleeps4

Slide-outs2

Fresh water105 gal

Grey water65 gal

Black water45 gal

Fuel100 gal

Engine / chassisCummins ISB 330 hp diesel pusher · Freightliner

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

WHERE PEOPLE SLEEP

1× Rear bed(Permanent)—
1× Sofa(Convertible)—

HOW IT'S BUILT: 4/5

WallsLaminated fiberglass

FrameSteel

RoofWalk-on

UnderbellyEnclosed

Newmar (Better tier): Newmar

YEAR BY YEAR: WHAT CHANGED

2005Introduced

FINDING ONE

Scarce: months of watching; be ready to fly and drive it home. Why: only one model year; 21 years out of production. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

37 ft plan on the 228 in. wheelbase. Slide-out count added by a later pass: gladesrv.net listing spec table row '# of Slideouts: 2' seen in raw HTML for 2005 Newmar Kountry Star 3720

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 3721 · 29,500 lb · sleeps 6 3907 · 32,000 lb · sleeps 4 3908 · 32,000 lb · sleeps 4 the whole line →

Find one for sale

Live listings for the 3720 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 3720 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.