Thor Motor Coach Quantum WS31

Name: Thor Motor Coach Quantum WS31
Brand: Thor Motor Coach

Class Cbuilt 2016–25Mixed build tierCommon on the used market

WHAT ONE COSTS

$130,300est. used (2025, 1 yr old)

Sticker was $172,350 in 2023. Out of production since 2025, so the used market is the only way to buy one. Estimate assumes a 2025 unit.

THE SPECS

Length32.3 ft

Height (incl. A/C)11.2 ft

Width8.3 ft

Interior height7.0 ft

GVWR14,500 lb

Dry weightnot published

Sleeps5

Fresh water40 gal

Grey water28 gal

Black water28 gal

Awning16 ft

Fuel55 gal

Engine / chassisFord E-450 7.3L V8

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

WHERE PEOPLE SLEEP

1× rear queen bed(Permanent)60×75
1× cab-over bunk(Permanent)52×96
1× jack-knife sofa(Convertible)—
1× 70 in dream dinette(Convertible)—

HOW IT'S BUILT: 3/5

WallsLaminated fiberglass

FrameAluminum

RoofWalk-on

UnderbellyOpen

Thor Motor Coach (Mixed tier): Thor Motor Coach

YEAR BY YEAR: WHAT CHANGED

2016Introduced
2021Ford 7.3L V8 replaces the 6.8L V10
2025Final model year

FINDING ONE

Common: usually several for sale within a day’s drive. Why: Thor Motor Coach is a volume manufacturer; 10-year production run. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Ten-year run as the non-bunk sibling of the LF31; dropped for 2026.

OTHER QUANTUM FLOORPLANS

CR24 · 11,030 lb · sleeps 5 DS24 · 11,030 lb · sleeps 3 GL24 · 12,125 lb · sleeps 4 GR22 · 12,500 lb · sleeps 5 HS31 · 14,500 lb · sleeps 5 JM31 · 14,500 lb · sleeps 5 KM24 · 11,030 lb · sleeps 5 KW29 · 14,500 lb · sleeps 5 LC19 · 11,500 lb · sleeps 3 LC21 · 12,500 lb · sleeps 4 LC22 · 12,500 lb · sleeps 5 LC25 · 12,500 lb · sleeps 5 LC26 · 14,500 lb · sleeps 5 LC28 · 14,500 lb · sleeps 5 the whole line →

Find one for sale

Live listings for the WS31 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 Quantum line ↗

Is the WS31 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.