AI Damage2017 Thor Motor Coach Palazzo: common problems
Owners of the 2017 Thor Motor Coach Palazzo filed 6 complaints with NHTSA, most often about structure and visibility. The maker issued 1 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 6
- Technical service bulletins (TSB)
- 1
What fails most often
- 1 Structure 83% of all complaints
- 2 Visibility 33% of all complaints
- 3 Exterior lighting 17% of all complaints
- Structure: 5 complaints (83% of all); manufacturer bulletins for this component: 1.
- Visibility: 2 complaints (33% of all).
- Exterior lighting: 1 complaints (17% of all).
Symptoms owners describe
How many of the 6 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Structure | 5 | 0 | 1 |
| Visibility | 2 | 0 | 0 |
| Exterior lighting | 1 | 0 | 0 |
| Other | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
I am reporting a serious and repeated safety defect involving Hehr side windows installed on my 2018 Thor Palazzo 36.1 motorhome (VIN: [XXX] ). Multiple operable side windows on this RV have experienced adhesive bond failure between the scissor arm/operator mechanism and the vent glass pane.
down the road , the rear side window just fell off onto the roadway. I believe the window is made by lippert. On the rv forum there are a lot of people experiencing this same problem.
The vehicle was taken to the local dealer to be serviced under the NHTSA Campaign Number: 21V00H000 (Electrical System, Exterior Lighting) which would address the failures but after the recall remedy was performed the failure persisted. The vehicle was not diagnosed or repaired.
While stationary, first large window behind driver's side broke off, at the top hinge, for no reason. If this had happened while driving, it could have caused serious harm to fellow motorists. At the time this happened, I was unaware of this website and the ability to report.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 13,278 of 36,656 model years in the NHTSA data (top 36% most complained about).
On average one model year of the Palazzo has 6 complaints (8 years in the data). This year has 6, about average.
What to check before buying
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Visibility. Wipers, mirrors, defrosters, cracked glass.
- Exterior lighting. Headlamps, leveling, sensors and mounts after a frontal hit.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- The overhead cabinets located above the driver and front passenger seats may become loose during travel
This Technical Service Bulletin will be gathering information regarding this possible concern and will provide guidance on how to ensure the overhead cabinets are properly secured in the motorhome.
Other years of this model
Questions and answers
What are the most common problems with the 2017 Thor Motor Coach Palazzo?
Owner complaints to NHTSA most often mention: structure, visibility, exterior lighting. Total complaints: 6. The most frequent symptoms in complaint texts: windows, sunroof (67%), door locks, latches, handles (17%).
How many service bulletins (TSB) were issued for the 2017 Thor Motor Coach Palazzo?
NHTSA lists 1 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2017 Thor Motor Coach Palazzo from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2017 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.