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Thor Motor Coach Four Winds 31Y

Class Cbuilt 2018–20Mixed build tierFindable on the used market
WHAT ONE COSTS
$70,800est. used (2020, 6 yr old)

Sticker was $115,050 in 2020. Out of production since 2020, so the used market is the only way to buy one. Estimate assumes a 2020 unit.

THE SPECS
Length31.3 ft
Height (incl. A/C)11.2 ft
Width8.3 ft
Interior height7.0 ft
GVWR14,500 lb
Dry weightnot published
Sleeps6
Slide-outs1
Fresh water40 gal
Grey water28 gal
Black water28 gal
Awning15 ft
Fuel55 gal
Engine / chassisFord Triton V10 on E-450

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

WHERE PEOPLE SLEEP
  • 1× Rear queen bed(Permanent)60×75
  • 1× 70in jack-knife sofa(Convertible)—
  • 1× 76in Dream Dinette(Convertible)—
  • 1× Cabover bunk(Permanent)54×96
HOW IT'S BUILT: 3/5
WallsLaminated fiberglass
FrameSteel
RoofWalk-on
UnderbellyOpen

Thor Motor Coach (Mixed tier): Thor's volume gas Class C: Vacu-Bond laminated fiberglass body on a welded aluminum cage over a Ford E-450 — decent bones, but Thor's assembly QC and dealer-service record are the weak link.

YEAR BY YEAR: WHAT CHANGED
  • 2018Introduced
  • 2020Discontinued
FINDING ONE

Findable: a few listed nationwide most weeks. Why: Thor Motor Coach is a volume manufacturer. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Short-wheelbase 31-footer with a rear queen and 70in sofa.

OTHER FOUR WINDS FLOORPLANS
19X · 11,500 lb · sleeps 319Z · 11,500 lb · sleeps 321Z · 12,500 lb · sleeps 422B · 12,500 lb · sleeps 622E · 12,500 lb · sleeps 722Z · 12,500 lb · sleeps 423U · 12,500 lb · sleeps 624F · 12,500 lb · sleeps 625M · 12,500 lb · sleeps 425V · 12,500 lb · sleeps 625Z · 12,500 lb · sleeps 426B · 12,500 lb · sleeps 826X · 14,500 lb · sleeps 627P · 14,500 lb · sleeps 6the whole line →
Find one for sale

Live listings for the 31Y 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 Four Winds line ↗

Is the 31Y 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.