RoadVitals

2018 Thor Motor Coach Four Winds Owner Complaints

Reports submitted to NHTSA by owners and drivers, shown in full

Data refreshed

Complaints on fileComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
4
Latest Sep 12, 2025
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
0
Filed in the last 12 monthsReports filed with NHTSA in the trailing 365 days. Recent volume reflects attention and vehicle age as much as anything else.
1
Reports on file since Oct 20, 2017

What this page shows

Our database holds 4 NHTSA owner-reported complaints for the 2018 Thor Motor Coach Four Winds. Each one is a report filed by an owner or driver and published by NHTSA without most of them being verified. A complaint is not a confirmed defect, not a recall and not a manufacturer bulletin. Narratives are shown exactly as filed.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Complaints, most recent first

Showing 1–4 of 4

Fuel system
Filed Sep 12, 2025

The contact owns a 2018 Thor Motor Coach Four Winds Motorhome constructed on a 2017 Ford E-350 Chassis and hauling a 17-foot cargo trailer. The contact stated that while traveling to another state in the mountains, the RV suddenly began to buck and lost motive power and stalled on several occasions. The contact was able to pull over safely. There were no warning lights illuminated. The RV was taken to an independent mechanic who determined that the fuel module needed to be replaced. The RV was repaired, but the failure reoccurred. A mobile RV mechanic determined that the fuel module needed to be replaced. The RV was repaired, but the failure persisted. The RV stalled, leaving the occupants stranded for several hours, but eventually restarted. The RV was taken to the local dealer, where it was determined that the OEM fuel module needed to be replaced but eventually used an aftermarket fuel module. The RV was towed to another local dealer, Harry Robinson Sallisaw Ford (2300 S Kerr Blvd, Sallisaw, OK 74955) where it was determined that the fuel module, fuel pump, and PCM needed to be replaced. The vehicle was repaired, but the failure persisted, and the RV was towed back to the same local dealer. The manufacturer was contacted, who confirmed there was no warranty coverage on the RV for the failure. The failure mileage was approximately 70,000.

NHTSA ID
11686957
Incident
Jun 1, 2025
Mileage
70,000 mi
Other / unspecified
Filed Oct 11, 2021

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!

NHTSA ID
11436297
Incident
Sep 14, 2021
Suspension
Filed Jul 2, 2018

INCORRECT WEIGHT DISTRIBUTION. BACK OF VICHICLE TO LOW,WHICH CAUSES FRONT TO BE TO HIGH. UNABLE TO MAINTAIN LANE WHEN BENG PASSED BY A BIG RIG OR SIDE GUST OF WIND. VICHICLE VERY UNSTABLE,SHOULD NOT HAVE BEEN SOLD IN THAT CONDITION.

NHTSA ID
11105074
Incident
Aug 2, 2017
Other / unspecifiedSteeringSuspension
Filed Oct 20, 2017

ONCE YOU GO ABOVE 40 MPH THE STEARING WHEEL STARTS TO SHIMMY AND THE FRONT END VIBRATES. IT TAKES ALL YOUR EFFORT TO HOLD IT ON THE ROAD UNTIL YOU REACH THE SPEED OF 70 MPH OR MORE. THIS HAPPENS WHILE TRAVELING ON MAJOR HIGHWAYS LIKE I95.

NHTSA ID
11035145
Incident
Sep 7, 2017

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.

Data sources

Data on this page last refreshed .