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Thor Motor Coach Aria 3401

Class Abuilt 2017–25Mixed build tierCommon on the used market
WHAT ONE COSTS
$276,300est. used (2025, 1 yr old; from 3 priced floorplans of this line)
THE SPECS
Length34.8 ft
Height (incl. A/C)12.5 ft
Width8.4 ft
Interior height7.0 ft
GVWR32,400 lb
Dry weightnot published
Sleeps4
Slide-outs2
Fresh water91 gal
Grey water51 gal
Black water51 gal
Air conditioning30,000 BTU
Awning20 ft
Fuel100 gal
Engine / chassisCummins ISB-XT 6.7L 360HP/800 lb-ft, Freightliner XC-R, Allison MH-3000
GeneratorOnan RV QD 8000 diesel

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

WHERE PEOPLE SLEEP
  • 1× King bed with Tilt-A-View inclining mechanism(Permanent)72×80
  • 1× Power drop-down hide-away overhead cockpit bunk(Stow-away)48×74
  • 1× Driver-side leatherette sofa bed (optional)(Convertible)—
HOW IT'S BUILT: 4/5
WallsLaminated fiberglass
FrameSteel
RoofWalk-on
UnderbellyEnclosed

Thor Motor Coach (Mixed tier): Thor Aria

YEAR BY YEAR: WHAT CHANGED
  • 2017Introduced
  • 2020Listed at 34'-7"; overhead bunk 48×76
  • 2021Length listed 34'-9"; brochure width shown 96" (101" before and after)
  • 2024Furnace up to 40,000 BTU; overhead bunk 48×74
  • 2026Dropped from the lineup
FINDING ONE

Common: usually several for sale within a day’s drive. Why: Thor Motor Coach is a volume manufacturer; 9-year production run. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

The short one - under 35 ft so it fits state and national park sites that turn away 40-footers, but still a real diesel pusher with a king bed.

OTHER ARIA FLOORPLANS
3601 · 35,320 lb · sleeps 63701 · 35,320 lb · sleeps 63702 · 35,320 lb · sleeps 43901 · 35,320 lb · sleeps 63902 · 35,320 lb · sleeps 64000 · 35,320 lb · sleeps 8the whole line →
Find one for sale

Live listings for the 3401 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 Aria line ↗

Is the 3401 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 manufacturer spec sheets, retrieved 2026-07.