Newmar Kountry Star 3912

Name: Newmar Kountry Star 3912
Brand: Newmar

Class Abuilt 2006–08Better build tierScarce on the used market

WHAT ONE COSTS

$102,900est. used (2008, 18 yr old)

Sticker was $258,754 in 2008. Out of production since 2008, so the used market is the only way to buy one. Estimate assumes a 2008 unit.

THE SPECS

Length39.2 ft

Height (incl. A/C)12.4 ft

Width8.5 ft

Interior height7.0 ft

GVWR32,000 lb

Dry weight26,092 lb

Cargo capacity5,908 lb

Sleeps6

Fresh water105 gal

Grey water65 gal

Black water45 gal

Fuel100 gal

Engine / chassisCummins ISC 360 or 400 hp diesel pusher · Spartan Mountain Master

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

WHERE PEOPLE SLEEP

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

HOW IT'S BUILT: 4/5

WallsLaminated fiberglass

FrameSteel

RoofWalk-on

UnderbellyEnclosed

Newmar (Better tier): Newmar

YEAR BY YEAR: WHAT CHANGED

2006Introduced
2007Height to 12'5"
2008Spartan Mountain Master chassis

FINDING ONE

Scarce: months of watching; be ready to fly and drive it home. Why: 18 years out of production. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Three-year 39-footer that bridged the Freightliner and Spartan eras.

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 3912 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 3912 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.