Car Defect Radar
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Built from NHTSA complaints and recalls collected for this model, generated October 26, 2026. Totals reflect what has been collected, not every complaint ever filed.
Confirm 6 recalls before you buy.

Ask the seller for proof the repair was completed, or run the free VIN check. Recall repairs are done at no cost by a dealer.

Recalls

6 total · 6 to confirm

Safety issues the manufacturer must repair for free. A recall means confirm the fix was done, not walk away.

Safety recall

Confirm it was repairedRecall 23V759000 · Nov 2023

A detached solar panel can become a road hazard, increasing the risk of a crash.

Remedy
Dealers will replace the lower bracket, free of charge. Owner notification letters were mailed January 9, 2024. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000298.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Fuel system recall

Confirm it was repairedRecall 23V285000 · Apr 2023

A gas leak in the presence of an ignition source increases the risk of a fire.

Remedy
Dealers will inspect and replace the fuel hose and clamps, as necessary, free of charge. Owner notification letters were mailed May 22, 2023. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000294.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Safety recall

Confirm it was repairedRecall 23V068000 · Feb 2023

An awning extending unintentionally during transit may become a distraction or road hazard, increasing the risk of a crash.

Remedy
Dealers will install an additional ignition cutoff wire harness at the BT12 module, free of charge. Owner notification letters were mailed March 28, 2023. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000289.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Safety recall

Confirm it was repairedRecall 22V300000 · May 2022

A gas leak in the presence of an ignition source can increase the risk of a fire.

Remedy
Dealers will replace the quick disconnect fittings, free of charge. Owner notification letters were mailed June 27, 2022. Owners may contact TMC customer service at 1-877-855-2867.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Safety recall

Confirm it was repairedRecall 21V755000 · Sep 2021

A gas leak increases the risk of a fire.

Remedy
Dealers will replace the LP gas line and reroute it as necessary, free of charge. Owner notification letters were mailed November 23, 2021. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000243.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Safety recall

Confirm it was repairedRecall 21V396000 · May 2021

An electrical short can cause the junction box to overheat, increasing the risk of a fire.

Remedy
Dealers will install a new solar panel and junction box, free of charge. Owner notification letters were mailed July 22, 2021. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000226.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Owner complaints by system

11 total

Unverified reports owners filed with NHTSA, grouped by the part of the car. Useful for spotting patterns. Open a group to read recent examples.

Engine & powertrain

Minor
2

Most reports here involve fluid leaks.

fluid leaks 2
A recent report: This is a Thor Scope RV built on the Promaster 1500 platform. The incident involves the Onan gasoline powered generator, which is directly connected to the fuel tank. Next to the generator in the…
Read full complaint

This is a Thor Scope RV built on the Promaster 1500 platform. The incident involves the Onan gasoline powered generator, which is directly connected to the fuel tank. Next to the generator in the fuel line, there is a small white inline fuel filter connected by the fuel hose going over a nipple on the filter and reinforced by a hose clamp. In my case, the hose clamp was not installed sufficiently over the nipple (far enough back on the fuel hose that it did not completely engage the nipple), and presumably from vibration associated with the generator operation and driving, the hose fully detached from the nipple and spilled fuel in an uncontrolled manner until I smelled/noticed it coming out from under the vehicle. There was certainly sufficient fuel to have started a major fire if it had reached an ignition source. Fortunately, I was able to get under the vehicle and push the parts back together once the problem was noticed. But, this would not have been possible if there were any ignition sources nearby. Fortunately, the vehicle was parked and off when the spill occurred. Had I not been able to stop the leak, it is my understanding that 3/4 of the tank would have drained since I've been told that the intake is located at the 1/4 full level of the tank to prevent the generator from running the vehicle completely out of fuel. Photos attached show the part after I pushed the hose back on and tried to reposition the hose clamp closer to the center of the filter. This was very difficult to do while laying on the ground under the vehicle, so I didn't get it on as far as I would have preferred until I was able to get the vehicle to a place where I could elevate it and get better access.

Source: NHTSA complaint ODI #11703377 · view all complaints for this vehicle at nhtsa.gov

Electrical & infotainment

Minor
3

Most reports here involve electrical shorts.

electrical shorts 1
A recent report: Solar panel on Thor 18M was completely blown off (now missing) the roof during a recent trip on 22-Oct-2022. The only remaining evidence of the solar panel is attached to the mounting brackets. PDF…
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Solar panel on Thor 18M was completely blown off (now missing) the roof during a recent trip on 22-Oct-2022. The only remaining evidence of the solar panel is attached to the mounting brackets. PDF with pictures attached.

Source: NHTSA complaint ODI #11491021 · view all complaints for this vehicle at nhtsa.gov

Airbags & seat belts

Minor
1

Most reports here involve other issues.

other issues 1
A recent report: Rear passenger seat/couch, had passengers in back, hit bump and had to break…couch came apart as it was held together by two wood screws, once it came apart, seatbelts became useless as they became…
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Rear passenger seat/couch, had passengers in back, hit bump and had to break…couch came apart as it was held together by two wood screws, once it came apart, seatbelts became useless as they became loose. Metal that holds them is cut in half and in a crash, passengers would go forward into driver.

Source: NHTSA complaint ODI #11581283 · view all complaints for this vehicle at nhtsa.gov

Structure & body

Minor
1

Most reports here involve other issues.

other issues 1
A recent report: Rear exit door on driver side will not open. THOR has placed a cabinet on the side that blocks the emergency exit in case of a kitchen fire. Manufacturer should have reversed the cabinetry or made it…
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Rear exit door on driver side will not open. THOR has placed a cabinet on the side that blocks the emergency exit in case of a kitchen fire. Manufacturer should have reversed the cabinetry or made it where both doors open in case of emergency.

Source: NHTSA complaint ODI #11581281 · view all complaints for this vehicle at nhtsa.gov

Other systems

Minor
4

Most reports here involve other issues.

other issues 4
A recent report: While traveling on the highway, the solar panel situated atop the van flew off as a result of strong winds. Fortunately, there were no injuries, but this issue poses a significant risk of severe harm…
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While traveling on the highway, the solar panel situated atop the van flew off as a result of strong winds. Fortunately, there were no injuries, but this issue poses a significant risk of severe harm or even fatalities. The solar panel remains unaccounted for. It is noteworthy that other owners of the same vehicle have reported similar problems. I am in contact with a representative of the manufacturer, Thor, but an inspection has not been conducted yet. There were no warning indicators or messages to notify me that the solar panel had detached; instead, it was a passing motorist who alerted me to inspect my roof.

Source: NHTSA complaint ODI #11551505 · view all complaints for this vehicle at nhtsa.gov

Is 11 complaints a lot? They were filed between 2021 and 2025, roughly 3 a year, which is fewer than the typical model in this dataset. We do not have sales figures for this model, so treat this as a rough volume, not a rate per car on the road. Popular, high-volume models naturally collect more complaints over time.