THOR MOTOR COACH Complaints

I am filing a complaint regarding manufacturer non-compliance and dealership refusal to execute safety Recall 59C (NHTSA Campaign 25V552) on my 2019-2021 Ram ProMaster (Thor Scope 18m Class B RV upfit). The authorized dealership is refusing to perform a non-destructive repair on the vehicle, demanding instead to dismantle the built-in RV living space/bathroom structure at unknown risk and liability to the owner. Over a month ago, the dealership attempted to circumvent federal recall regulations by pressuring me to accept the uninstalled, loose backup camera hardware over the counter, which I refused due to liability. The dealership is currently withholding my VIN-assigned safety remedy part and refusing service. The Stellantis corporate supervisor assigned to my case has been unresponsive and has failed to coordinate a part transfer to a competent facility capable of utilizing a non-destructive borescope/fishing method to complete the recall. I am requesting federal intervention to compel Stellantis to transfer my safety hardware and provide the dealership the extra time to execute this recall safely and without cost to the consumer."

On [XXX] I bought an RV from Camping World in CO. At the time of purchase, I was not informed that any of the tires installed on the vehicle were retread tires, nor was I told that a retread tire size 245/70R19.5 had been installed on the front steering axle of a passenger vehicle. On [XXX], while traveling from Arizona back to Colorado, the front passenger-side tire suffered a catastrophic failure when the tread separated from the tire. The failure occurred while we were descending a 6% mountain grade with 3 adults, 1 child, 2 dogs and 1 cat onboard. When the tread separated, it caused extensive damage to the RV, including destruction of the brake line, braking system, and ABS system. My boyfriend, who was driving at the time and is a professional mechanic, immediately recognized that the brakes had failed after the tire struck the brake line. He kept pressure on the brake pedal and skillfully maneuvered the RV to the shoulder of the roadway. We ultimately came to a stop on the side of the road adjacent to a steep cliff. Had he not reacted quickly and appropriately, this incident could very easily have resulted in a fatal accident. We were fortunate that no one was physically injured. However, the circumstances of this failure raise serious concerns regarding the condition of the vehicle at the time of sale and the installation and disclosure of retread tires, particularly on a steering axle where tire failure can have catastrophic consequences. Had we been informed that the RV was equipped with retread tires, especially on the front axle, we would have had the opportunity to evaluate, replace, or further inspect those tires before operating the vehicle. No such disclosure was made. This incident resulted in significant property damage, loss of use of the vehicle, substantial inconvenience, emotional distress, and exposed my family and passengers to an unreasonable and potentially fatal safety hazard. I am requesting a full investigation into this matter. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMAT

On [XXX] I bought an RV from Camping World in CO. At the time of purchase I was not informed that any of the tires installed on the vehicle were retread tires, nor was I advised that a retread tire 245/70R19.5 had been installed on the front steering axle of a passenger vehicle. On [XXX] while traveling from Arizona back to Colorado the front passenger-side tire suffered a catastrophic failure when the tread separated from the tire. The failure occurred while we were descending a 6% mountain grade with 3 adults & 1 child onboard. When the tread separated, it caused extensive damage to the RV, including destruction of the brake line, braking system, and ABS system. My boyfriend, who was driving at the time and is a professional mechanic, immediately recognized that the brakes had failed after the tire struck the brake line. He kept pressure on the brake pedal and skillfully maneuvered the RV to the shoulder of the roadway. We ultimately came to a stop on the side of the road adjacent to a steep cliff. Had he not reacted quickly and appropriately, this incident could very easily have resulted in a fatal accident. We were fortunate that no one was physically injured. However, the circumstances of this failure raise serious concerns regarding the condition of the vehicle at the time of sale and the installation and disclosure of retread tires, particularly on a steering axle where tire failure can have catastrophic consequences. Had we been informed that the RV was equipped with retread tires, especially on the front axle, we would have had the opportunity to evaluate, replace, or further inspect those tires before operating the vehicle. No such disclosure was made. This incident resulted in significant property damage, loss of use of the vehicle, substantial inconvenience, emotional distress, and exposed my family and passengers to an unreasonable and potentially fatal safety hazard. I am requesting a full investigation into this and revocation of sales contract. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFO

Three original equipment Hankook Dynapro HT tires developed belt-related failures at approximately 6,000 miles of use during a road trip in June 2026. On [XXX], while driving in Tennessee, we noticed a vibration that gradually increased in intensity. We stopped for inspection at C&D Tire & Service in Athens, TN, which found a "bad belt" in the left-front tire at an odometer reading of 5,649 miles. The tire was replaced and retained. The following day, [XXX], the vibration returned and worsened. We stopped at Bill Morgan Tire in Lexington, KY, which found a "severe belt rupture" in the left-rear outer tire and noted that the right-front original equipment tire was "showing signs" of a similar condition. The work order noted all five removed tires had a little over 6,000 miles of use and approximately 12/32" tread remaining. The worst of the tires was retained. Two independent tire dealers, in two different states, identified belt-related abnormalities in three original equipment tires within approximately 24 hours. Given that we were hundreds of miles from home and continuing on interstate highways, we replaced all remaining tires for safety. We have retained two of the removed tires, which show visible belt deformity, and they are available for inspection. No crash, injury, or loss of vehicle control occurred; the vibration was noticed and addressed before any tire failed catastrophically while underway. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

When driving on wet roads, water from the right side rear wheels sprays up into a metal battery compartment holding both the chassis and house batteries. This compartment has three large drain holes in the floor of the compartment and, there is nothing underneath those holes to prevent rain water from being thrown into the compartment. The water in the compartment is causing premature rusting, which will eventually lead to failure of the floor, and the batteries may fall out. Also, all of the components in the compartment, including batteries, cables, binding posts, etc. are getting saturated with water which is causing corrosion and has the potential to cause an electrical short. The Dealer Service Center stated that this is how it’s designed and there is nothing that can be done to rectify it.

The 2022 RAM Promaster 1500 was converted by Thor Industries to a 2024 Thor Scope 18M in spring 2023 before I purchased it from a dealer in Connecticut. However, information concerning this conversion was not shared with the federal government as the vehicle VIN still lists it as a Promaster 1500. This caused me to miss notification for NHTSA Campaign Number 25V792000 involving a potential travel hazard created by adhesive failure leading to solar panel detachment. While traveling south to St. Johns, New Brunswick, Canada on [XXX] on [XXX], the panel on the roof did detach when the vehicle I was driving was passed by a bus. The incident occurred on a lightly traveled section of road and did not result in additional damage. Roof brackets remain intact, see photo below, indicating the method of attachment to the brackets failed. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Permanently frame mounted propane tank is overheating due to a lack of heatshields. Heat from the vehicle motor, exhaust, and transmission is radiating to the propane tank causing the overheating and over pressurization of the propane tank. This is causing the pressure relief valve to exhaust major pressure to atmosphere. The tank is so hot you can not hold your hand on it.

I bought this RV as a new 2023 Thor Quantum MB24 . After a recall performed by Mercedez of Pleasanton , California ( after the VIN no. was punched on their computer ) , it shows as a 2021 Model year . How would I know if I was sold a pre - owned Motor Vehicle or a new one ? It has 2000+ miles in accordance to RECVAN @ Fremont , California , was acquired driven from Elkhart , Indiana to California . There were few issues and problems that I found out later after I had the RV parked outside my resident in Mountain House , California : Dirty outside compartment , Inoperable Navigation system , left outside wheel hub cap held by a single screw , all 4 rear wheel air valves not working properly , dream dinette can not turn to bed due to improper fit , some outside compartment latches loose , shower curtain had tiny slits , missing toilet bolt cover . Most of this issues was taken care of as part of the warranty . My concern is why is it a 2021 year model and not 2023 as per VIN NUMBER ? I s it Pre- Owned ? I don't have any way of knowing , hopefully you can help me with this issue . Thanks Respectfully , [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Secondary alternator, installed by Thor is improperly installed and not grounded causes multiple failures and fire risk.

The aux alternator installed to charge the house battery is failing, making noise and almost starting the motorhome on fire. A quick search found EVERYONE with the Thor motorhomes with this alternator is having the same issues and Thor will do nothing about it. Many have installed multiple new alternators, and because the wiring gauge isn't big enough (also installed by Thor) the issues come up again, and again. Many people have been left stranded, many have had to put a fire out due to this defect. I contacted Thor and they are well aware of teh issue, yet do not help to resolve it.