2021 Thor Motor Coach Aria problems: recalls, complaints and what to check
NHTSA has 2 recalls and 1 owner complaint on file for the 2021 Thor Motor Coach Aria. Here is what they are, what a technician checks for each kind of fault, and how to look one over before you buy it.
Tires: 1 recall
Recall 20V559000 (15/09/2020): TIRES:VALVE
Thor Motor Coach (TMC) is recalling certain 2018-2021 Aria, Palazzo, Tuscany, and Venetian motorhomes built on a Daimler Trucks (DTNA) chassis. The tire valve stem extension for the inner wheel may contact the outer wheel rim opening and become damaged.
Fix: TMC will notify owners, and DTNA dealers will inspect the inner wheel valve stem stabilizers, and adjust as needed and/or replace the inner valve stem, free of charge. The recall began November 2, 2020. Owners may contact TMC customer service at 1-800-524-5210 extension 104 or DTNA customer service at 1-800-547-0712. TMC's number for this recall is RC000204. DTNA's number for this recall is FL-861.
What a tech checks: Age, load range and pressure. RV tires age out before they wear out, and an underrated tire on a heavy trailer is a blowout waiting to happen. Before you buy: Read the DOT date and the load range on the sidewall.
Chassis, towing and tires lessons · Trailer guide
Structure, roof and leaks: 1 recall
Recall 21V522000 (08/07/2021): STRUCTURE
Thor Motor Coach (TMC) is recalling certain 2019 Challenger, Palazzo, Tuscany, 2019-2020 Miramar, 2019-2021 Aria, Outlaw, and Venetian recreational vehicles equipped with Hehr 6400 series windows. The adhesive that bonds the vented portion of the window may fail.
Fix: Dealers will inspect the windows, and replace the vent if necessary, free of charge. Owner notification letters were mailed September 8, 2021. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000232.
What a tech checks: Roof sealant, seams, window and slide seals, and the frame. Water intrusion shows up as delamination, soft floors and stained ceilings months after the leak started. Before you buy: Press the sidewalls and walk the floor; look at every seam and seal.
Roof, leaks and body lessons · Seals and leaks guide
Axles, brakes, suspension and hitch: 1 complaint
What a tech checks: Bearings, brake magnets, worn shackle bolts and bent axles. A trailer that wears tires on the inside edge or pulls to one side usually has an axle or suspension problem. Before you buy: Bolts tight, springs not flat, brakes apply with the breakaway pin pulled.
Chassis and towing lessons · Trailer guide
What owners reported to NHTSA
04/24/2021, WHEELS: TIRE PRESSURE OUT OF LIMITS AND TEMPERATURES AT 400 F. ON THE DASH.
Looking at a 2021 Thor Motor Coach Aria?
The Buyer's Check walks you through it on your phone: what to ask, the outside walk-around, water damage, every system on every power source, with the recalls above built in. You get a report that says what's a walk-away and what to negotiate on.
Checked against NHTSA 2026-10-23. Recall repairs are free at an authorized dealer. Complaints are owner reports to NHTSA and are not verified.