NHTSA vehicle safety data

2020 Thor Motor Coach Palazzo Recalls & Complaints

The 2020 Thor Motor Coach Palazzo has 3 NHTSA recall campaigns and 3 owner complaints on file as of November 3, 2026. Recall repairs are usually free at an authorized Thor Motor Coach dealer.

NHTSA recall and complaint data for the 2020 Thor Motor Coach Palazzo. Recall data is refreshed daily from NHTSA.

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2020 Thor Motor Coach Palazzo owner complaints

Owners have filed 3 complaints with NHTSA about the 2020 Thor Motor Coach Palazzo, describing incidents dated September 25, 2021 to September 15, 2024.

Most-cited components

Electrical System 1 complaint
Exterior Lighting 1 complaint
Service Brakes 1 complaint
Structure 1 complaint

Newest complaints

ODI #11615219 · Filed September 18, 2024
The EATON Power Distribution Modual P\N A66-05172-00 (S\N 18108065) in my motorhome was in a recall associated with the failed rear tail lights, rear turn signals, brack lights, running lights and failure of towed vehicle lights plug. The modual was repaired as a result of the recall and was working…
ODI #11508333 · Filed February 21, 2023
The contact owns a 2020 Thor Palazzo built on a 2020 Freightliner X line chassis. The contact stated that while driving approximately 55 MPH during a storm, the air brakes system alarm illuminated. The contact immediately pulled over to the side of the roadway and turned off the RV. The RV was towed…
ODI #11434764 · Filed September 28, 2021
The lower passenger side bracket between the fiberglass front of the body and the freightliner frame has released from the frame and is in danger of falling off. If this thing did come off and go bouncing down the road it could do some real damage. Noticed after other owners warned about the problem…

Read all 3 complaints

Front Lower Cap Brackets May Detach

NHTSA #23V113000 · Equipment — Recreational Vehicle/Trailer · NHTSA notice

Reported February 23, 2023 · Thor Motor Coach

Potentially affected: 1,969 vehicles

Repair completion: 23.77% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Thor Motor Coach campaign RC000291 · Owners notified March 15, 2023

Defect description

Thor Motor Coach (TMC) is recalling certain 2015-2023 Palazzo recreational vehicles. The front lower cap brackets that support the front fiberglass panel may become loose and detach from the vehicle while in motion.

Safety consequence

A detached bracket can become a road hazard, increasing the risk of a crash.

Manufacturer remedy

Dealers will inspect and replace the front lower brackets, as necessary, free of charge. Owner notification letters were mailed March 15, 2023. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000291.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Tire Valve Stem Extension May Become Damaged

NHTSA #20V559000 · Tires — Valve · NHTSA notice

Reported September 15, 2020 · Thor Motor Coach

Potentially affected: 1,631 vehicles

Thor Motor Coach campaign RC000204 · Owners notified November 2, 2020

Defect description

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.

Safety consequence

Extensive damage to the valve stem extension may result in a loss of tire pressure of the inner wheel, increasing the risk of a crash.

Manufacturer remedy

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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Slide Room may Move

NHTSA #19V504000 · Equipment — Recreational Vehicle/Trailer · NHTSA notice

Reported June 30, 2019 · Thor Motor Coach

Potentially affected: 1,554 vehicles

Repair completion: 84.55% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Thor Motor Coach campaign RC000170 · Owners notified August 1, 2019 · Vehicles built April 2, 2018 – June 19, 2019 (per NHTSA)

Defect description

Thor Motor Coach (TMC) is recalling certain 2019-2020 Challenger, Miramar, Magnitude, Outlaw, Omni, and Palazzo motorhomes. The vehicle control system software may cause the slide-out room to move unexpectedly.

Safety consequence

Unexpected movement of the slide-out room can increase the risk of a injury.

Manufacturer remedy

TMC will notify owners, and dealers will update the affected software, free of charge. The recall is expected to begin August 28, 2019. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000170.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

try.vin has no NCAP crash-test rating on file for the 2020 Thor Motor Coach Palazzo. NHTSA rates some vehicles by body style — pickups by cab, vans by roof height — so check nhtsa.gov/ratings.

3 owner complaints have been filed with NHTSA for the 2020 Thor Motor Coach Palazzo.

Electrical System; Exterior Lighting

ODI #11615219

Incident: September 15, 2024 · Filed: September 18, 2024

The EATON Power Distribution Modual P\N A66-05172-00 (S\N 18108065) in my motorhome was in a recall associated with the failed rear tail lights, rear turn signals, brack lights, running lights and failure of towed vehicle lights plug. The modual was repaired as a result of the recall and was working properly. The repaired Modual failed again in less than 1000 miles driven resulting in no passenger tail light, no brake lights, no running lights, and no function of the towed vehicle lights plug. The recall on my PDM P\N A66-05172-00 was not successful as the PDM is not working and is a safety concern.

Service Brakes; Service Brakes, Air

ODI #11508333

Incident: February 21, 2022 · Filed: February 21, 2023

The contact owns a 2020 Thor Palazzo built on a 2020 Freightliner X line chassis. The contact stated that while driving approximately 55 MPH during a storm, the air brakes system alarm illuminated. The contact immediately pulled over to the side of the roadway and turned off the RV. The RV was towed to the dealer who informed the contact that the air brake system had a pig tail that led into the transducer that had caused the chord to fracture. The dealer dried the moisture from the area and sprayed the area with silicon. The failure reoccurred approximately a year later when the contact had driven the RV during inclement weather. The vehicle was taken to another dealer who replaced the pig tail and transducer. The contact was informed by the dealer that due to the pig tail being attached so tightly and having no flexibility, the failure might recur. The manufacturer had been made aware of the failure. The failure mileage was approximately 15,000.

Structure

ODI #11434764

Incident: September 25, 2021 · Filed: September 28, 2021

The lower passenger side bracket between the fiberglass front of the body and the freightliner frame has released from the frame and is in danger of falling off. If this thing did come off and go bouncing down the road it could do some real damage. Noticed after other owners warned about the problem online.

Other Thor Motor Coach Palazzo model years

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