THOR MOTOR COACH Complaints

While driving during a rain storm both wipers stopped working. Drivers wiper fell to drivers side resting on side rear view mirror and passengers fell down front of the RV. Pulled over and stopped until rain stopped. After looking in engine compartment the hardware that connects both wiper arms to the motor broke off from where the wipers arms connect. No indication of failure until both arms just broke off. Looks like they broke because of stress moving the wipers across windshield. Not sure if poor design of poor metal used.

The contact owns a 2021 Thor Motor Coach Vegas Motorhome. The contact stated that while her husband was driving 63 MPH, the electric shade on the driver’s side front detached and fell off the motorhome. The contact had to hold the electric shade up until they were able to pull over at a gas station. The plastic clips that held the electric shade were fractured. The contact unclipped the electric shade and later attached it with zip ties to secure it in place. The vehicle was not diagnosed nor repaired. The manufacturer was made aware of the failure and informed the contact to make an appointment with a dealer to replace the plastic clips with metal clips and it would be covered under warranty. The failure mileage was unknown.

I was driving when the vehicle suddenly lost power; as it coasted to a stop, the cabin filled with gas smell. I stopped the vehicle and noticed significant amount of gasoline dripping from the engine. The vehicle was towed and service personnel determined the fuel line, specifically the plastic part that was clipped to the engine fuel rail, had catastrophically failed. The plastic clip separated from the metal end of the fuel line. This plastic piece is supposed to be permanently molded to the metal line. Once separated, the fuel line was still under pressure and pumping fuel directly on the engine, and was a significant fire hazard. I have the portion of the old line that failed. Ford replacement part number is 9C2Z*9S273*P Ford refused to replace part under power train warranty. The vehicle miles is ~10k and has been in service for 4 years.

Returning home from trip, route US I26 in NC, heading down 6 degree hill lost all speed control. The following dash lights came on: ABS, Engine Service, the Wrench, anti sway control. We were able to roll to the side of the road just before an entrance ramp. There was no acceleration control.

Right tag axle hub cap broke lose from the bracket securing the hub cap to the hub and departed the motorhome chassis. Incident occurred while traveling east on I-10 in Texas somewhere between San Antonio and Weimer. The hub cap bracket separated at the feet of the bracket. The feet of the bracket where still attached to the hub. Picture attached. The feet are available for further inspection. There were no warnings/symptoms when the incident occurred. Exactly when the event occurred is unknown. The hub cap assembly weighs approximately one pound. It could have struck a trailing vehicle causing significant damage, and a very real safety concern. I (driver/owner of the vehicle) was the only person to inspect the broken bracket.

While traveling on I 87 in New York, the factory-installed receiver hitch broke off allowing my vehicle being towed to separate from my RV causing extensive damage to my 2019 GMC Acadia. This could have been catastrophic if the car had hit other vehicles on this heavily traveled road. There was no visible sign of cracking or metal fatigue prior to the separation. This is not the first time that a tow hitch has separated from a Thor RV.

We had a cargo door skin failure while driving on I20 in Dallas on a windy day, 2/1/21. We have a 2017 Miramar which is the cousin of the Challenger. It peeled off while driving and went airborne behind us. We were stunned as we heard the peeling off and saw the launch of the cargo door skin. It broke the lock from the door frame as well. Miraculously, it landed on the side of the highway while motorists were swerving to miss the projectile. We stopped and checked all the doors including the outside kitchen, all of which are in the debonding process. We have an extended platinum RV warranty which did not cover the damaged cargo doors, as well as our RV insurance, which said it is a manufacturing issue. Initially Thor denied that could happen but the RV forums advise to use the code word Mishawaka and the threat of a lawsuit. The cargo and kitchen doors are becoming deboned and the vehicle is unsafe to drive until the doors are repaired. We learned that this is not a one-off and that several RV owners are d3aling with this issue.

Twice! Wheel rim developed a hairline crack in the weld adjacent to the valve stem. 2-times, different rims - both on inside dually rear - one left and one right side. The first happened on our first long trip in 2019. The second time was on the next long trip of 2021. Internet forums are showing that this is a rather "COMMON" issue! Plus, Mercedes has recorded lawsuits with similar rim weld failures on other Mercedes vehicles. I get NO sympathy or compensation through Mercedes or Thor - They each kick the can to the other, and the consumer is left at risk. Human safety is at great risk!

The contact owns a 2021 Thor Motor Coach Ace RV. The contact received notification of NHTSA Campaign Number: 21V202000 (Suspension, Power Train) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The local dealer and the manufacturer were made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

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.