2018 Thor Motor Coach Palazzo Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2018 Thor Motor Coach Palazzo, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Visibility550.0%
- Body & structure330.0%
- Other / unspecified220.0%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Visibility
Reports naming windshields, glass, wipers, defrosters and mirrors.
From owner reports, verbatim
The Thor motorhome has several windows. The windows they installed are laminated windows, with two panes of glass and a seal or glue which connects the outer glass to the inner glass. The attachment method for the outer glass is ineffective. As a result, the outer glass pane comes loose from the inner and is prone to fall off or fly off at highway speeds. The risk is that the pane could strike another vehicle and possibly cause an accident. Already Thor has replaced two of the window units on this unit around 2021, not under warranty but as a customer courtesy. I now have a third window unit that is experiencing the same problem. It is apparent to me Thor has acknowledged there is a risk present when they replaced the other units. In addition, Thor has issued a recall for several year models after my year model. It seems clear they are aware there is a risk of window failure in model years outside of the recall. Unfortunately, they are unwilling to address the risk and hazard.
MY 2018 THOR PALAZZO DRIVERSIDE AND PASSENGER SIDE WINDOWS HAVE FOGGED UP TO WHERE IT IS VERY HARD TO SEE OUT OF AND HAS BECOME A SAFETY CONCERN.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Body & structure
Reports naming the vehicle structure, frame, body panels, doors, hood and trim.
From owner reports, verbatim
Hello NTSB, the frameless windows Thor used on my rv are all failing.. basically the adhesive used to glue the bottom rail onto the glass keeps failing. This week I had two windows fail. The top bunk window, and the emergency exit window. Both window (at separate times) failed while driving. Lucky I saw them break loose and my wife was able to grab the window before it flew off on the freeway and possibly caused a major accident or injury with flying glass at freeway speed. Again this is the 4th window failure in the last 3 years. All with the Same problem. Last summer I had the same problem with the bottom bunk window, however that window flew off somewhere in New Mexico. Unfortunately I have no idea if the large piece of glass flying off my rv at freeway speed hurt anyone or anything. I filed a NTSB report (just like this) last year, and the never received or heard anything back from you guys. A year later 2 more windows have failed. Reading other post in the palazzo Facebook page, window failure (as I’m describing) is a very common occurrence. So much so, the 2017 and 2016 units have the recall on the windows. However the 2018’s are not included in that recall, but are obviously having the same problem. Please investigate this. Thor and the windows manufacturer HELM, are aware of the problem. So much so they sent me a new window and frame for the one I lost at no cost. Taking with HELM, they said they see this a lot.
The coach windows on the RV keep failing. Last year I had two windows fail on my drive to Wyoming. The sealant that hold the window bracket comes detached from the glass widow. When that happens the window flaps is the wind and if the window swing higher than 45 degrees, the window can slide off the top rail, and become a projectile for anyone traveling behind me. Since my windows didn’t fall off, I bought new sealant and reattached the rails back to my glass. Those two windows have been good since. Then this summer I lost and different body window (lower bunk). But this time, the window just flew off without me noticing. I sure hope it didn’t cause an accident or injury anyone. Lippert is the manufacturer of the window. And they have a recall on them, however the recall ends 2 month before my unit was built. So they say I don’t qualify for the recall. However I have had 3 windows fail for the sale reason and cause as the recall that ends 2 month before my unit was built. The recall window obviously needs to be expanded as many more units are effected. Talking with other owners of the same model on my Facebook group, this is a know problem. With a lot of failures. Someone is going to get injured when a window falls on the road and causes a accident or possibly even death.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Other / unspecified
Reports whose component NHTSA recorded as unknown, or that do not map to one of the categories above.
From owner reports, verbatim
The Thor motorhome has several windows. The windows they installed are laminated windows, with two panes of glass and a seal or glue which connects the outer glass to the inner glass. The attachment method for the outer glass is ineffective. As a result, the outer glass pane comes loose from the inner and is prone to fall off or fly off at highway speeds. The risk is that the pane could strike another vehicle and possibly cause an accident. Already Thor has replaced two of the window units on this unit around 2021, not under warranty but as a customer courtesy. I now have a third window unit that is experiencing the same problem. It is apparent to me Thor has acknowledged there is a risk present when they replaced the other units. In addition, Thor has issued a recall for several year models after my year model. It seems clear they are aware there is a risk of window failure in model years outside of the recall. Unfortunately, they are unwilling to address the risk and hazard.
THE FRONT CABINET ABOVE THE FRONT DASH INCLUDING THE STEERING WHEEL AND OTHER OPERATOR CONTROLS DETACHED FROM THE CEILING AND BEGAN FALLING DOWN. THIS OCCURRED WHILE THE RV WAS IN MOTION. HAD IT COMPLETELY DETACHED CONTROL OF THE RV WOULD HAVE BEEN LOST. THE SCREWS HOLDING THE CABINET FRONT PULLED OUT OF THE WHERE THEY WERE SCREWED IN ALLOWING THE FRONT OF THE CABINET TO FALL.*DT THE CONSUMER PROVIDED PHOTOS. *TR*DT*JB*DT CONSUMER SAYS THAT THERE WERE NO RV DEALERS NEARBY SO THEY REFASTENED THE SCREWS AS A STOP GAP MEASURE. DEALER AND MANUFACTURER WERE NOT CONTACTED. *DL
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .