IllustrationLOWER COMPARTMENT ( BASEMENT) BAY FLOORS ARE ROTTING DUE TO MOISTURE INFILTRATION FROM THE ROAD WHILE DRIVING IN THE RAIN. THE FLOORS ARE BULGING UNDERNEATH AND PRESENT A ROAD HAZARD IF STORED CARGO IS THROWN TO THE ROAD ENDANGERING OTHER MOTORISTS. THOR IS AWARE OF THE PROBLEM AND DOES NOTHING TO RECTIFY THE SITUATION.
2017 Thor Motor Coach Aria
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all Aria years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 2 of 2 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Structure. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Visibility/wiper. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports0 fire reports0 injury reports
What owners actually said
2 reportsTL* THE CONTACT OWNS A 2017 THOR ARIA. THE CONTACT STATED THAT THE VEHICLE'S SIDE VIEW MIRRORS WERE DETACHING FROM THE VEHICLE. THE CONTACT TOOK THE VEHICLE TO THE DEALER (TRAVEL TRAILER CENTER INC, 1001 LITTLE KANAWAH RIVER RD, PARKSERBURG, WEST VIRGINIA; 304-428-8203) WHO REPLACED THE SCREWS AND BOLTS USED TO ATTACH THE SIDE V…
Read full complaint
TL* THE CONTACT OWNS A 2017 THOR ARIA. THE CONTACT STATED THAT THE VEHICLE'S SIDE VIEW MIRRORS WERE DETACHING FROM THE VEHICLE. THE CONTACT TOOK THE VEHICLE TO THE DEALER (TRAVEL TRAILER CENTER INC, 1001 LITTLE KANAWAH RIVER RD, PARKSERBURG, WEST VIRGINIA; 304-428-8203) WHO REPLACED THE SCREWS AND BOLTS USED TO ATTACH THE SIDE VIEW MIRRORS TO A SIZE BETTER EQUIPPED TO HOLD THE WEIGHT OF THE MIRRORS. THE MANUFACTURER WAS NOT AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 2.500. *LN CONSUMER STATED ALL THE BOLTS AND SCREWS WERE LOOSE FROM THE MIRROR, DEALER REINSTALLED BOTH MIRRORS . UPDATED 7/31/18*JB
Official recalls
120V418000 · Electrical System; Exterior Lighting:brake Lights; Exterior Lighting:turn Signal
Jul 20, 2020
Thor Motor Coach (TMC) is recalling certain 2017-2020 Aria, Venetian and Tuscany, 2017 Tuscany XTE and 2017-2019 Palazzo motorhomes vehicles that received an inspection-only remedy for recall 18V-763. The rear mounted Power Distribution Module (PDM) may have been damaged during manufacturing, possibly resulting in the rear marker lights, brake lights, or turn signals not functioning.
Consequence & remedy
Consequence: Non-functioning exterior marker lights can increase the risk of a crash.
Remedy: TMC will notify owners, and Daimler Trucks dealers will replace the PDM, free of charge. Owner letters were mailed October 6, 2021. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000196.
Additional source detail variants (3)
Exterior Lighting:turn Signal
Thor Motor Coach (TMC) is recalling certain 2017-2020 Aria, Venetian and Tuscany, 2017 Tuscany XTE and 2017-2019 Palazzo motorhomes vehicles that received an inspection-only remedy for recall 18V-763. The rear mounted Power Distribution Module (PDM) may have been damaged during manufacturing, possibly resulting in the rear marker lights, brake lights, or turn signals not functioning.
Consequence: Non-functioning exterior marker lights can increase the risk of a crash.
Remedy: TMC will notify owners, and Daimler Trucks dealers will replace the PDM, free of charge. Owner letters were mailed October 6, 2021. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000196.
Exterior Lighting:brake Lights
Thor Motor Coach (TMC) is recalling certain 2017-2020 Aria, Venetian and Tuscany, 2017 Tuscany XTE and 2017-2019 Palazzo motorhomes vehicles that received an inspection-only remedy for recall 18V-763. The rear mounted Power Distribution Module (PDM) may have been damaged during manufacturing, possibly resulting in the rear marker lights, brake lights, or turn signals not functioning.
Consequence: Non-functioning exterior marker lights can increase the risk of a crash.
Remedy: TMC will notify owners, and Daimler Trucks dealers will replace the PDM, free of charge. Owner letters were mailed October 6, 2021. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000196.
Electrical System
Thor Motor Coach (TMC) is recalling certain 2017-2020 Aria, Venetian and Tuscany, 2017 Tuscany XTE and 2017-2019 Palazzo motorhomes vehicles that received an inspection-only remedy for recall 18V-763. The rear mounted Power Distribution Module (PDM) may have been damaged during manufacturing, possibly resulting in the rear marker lights, brake lights, or turn signals not functioning.
Consequence: Non-functioning exterior marker lights can increase the risk of a crash.
Remedy: TMC will notify owners, and Daimler Trucks dealers will replace the PDM, free of charge. Owner letters were mailed October 6, 2021. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000196.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.