Thor Motor Coach A.C.E. 30.4

Name: Thor Motor Coach A.C.E. 30.4
Brand: Thor Motor Coach

Class Abuilt 2017–21Mixed build tierFindable on the used market

WHAT ONE COSTS

$84,000est. used (2021, 5 yr old)

Sticker was $136,950 in 2021. Out of production since 2021, so the used market is the only way to buy one. Estimate assumes a 2021 unit.

THE SPECS

Length31.5 ft

Height (incl. A/C)12.2 ft

Width8.3 ft

Interior height7.0 ft

GVWR18,000 lb

Dry weightnot published

Sleeps6

Slide-outs1

Fresh water50 gal

Grey water47 gal

Black water40 gal

Air conditioning13,500 BTU

Awning16 ft

Fuel80 gal

Engine / chassisFord 6.8L V10 on F-53

GeneratorOnan 5.5kW gas

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

WHERE PEOPLE SLEEP

1× Rear queen bed(Permanent)60×75
1× Dinette conversion(Convertible)—
1× 68in jack-knife sofa(Convertible)—
1× Drop-down overhead bunk(Stow-away)46×74

HOW IT'S BUILT: 3/5

WallsLaminated fiberglass

FrameSteel

RoofWalk-on

UnderbellyOpen

Thor Motor Coach (Mixed tier): A.C.E. is Thor's entry gas Class A — Vacu-Bond laminated walls and a lot of standard content for the money, undercut by the same inconsistent Thor build QC that dogs the rest of the volume lineup.

YEAR BY YEAR: WHAT CHANGED

2017Introduced
2021Discontinued

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

208in-wheelbase rear-queen plan with the biggest basement of the mid A.C.E.s.

OTHER A.C.E. FLOORPLANS

27.1 · 16,000 lb · sleeps 6 27.2 · 18,000 lb · sleeps 6 29.2 · 16,000 lb · sleeps 6 29.3 · 18,000 lb · sleeps 6 29.4 · 18,000 lb · sleeps 6 29.5 · 18,000 lb · sleeps 6 29D · 18,000 lb · sleeps 6 29G · 18,000 lb · sleeps 6 30.1 · 18,000 lb · sleeps 8 30.2 · 18,000 lb · sleeps 8 30.3 · 18,000 lb · sleeps 7 30C · 18,000 lb · sleeps 6 32.1 · 20,500 lb · sleeps 6 32.3 · 18,000 lb · sleeps 7 the whole line →

Find one for sale

Live listings for the 30.4 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 A.C.E. line ↗

Is the 30.4 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.