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2017 Thor Motor Coach Ace

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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How this year compares

Owner complaints by model year

Other model years Selected year
Compare all Ace 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 3 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.

  • Electrical System. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Latches/locks/linkages. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Structure. 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

Electrical System complaints

2 reports
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5,000 miles · Aug 29, 2018
Electrical SystemTires

TL* THE CONTACT OWNS A 2017 THOR ACE RV EQUIPPED WITH GOODYEAR G6T0RV TIRES, SIZE: 245/17/R19.5 (NA). WHILE DRIVING APPROXIMATELY 55 MPH AND TOWING A TRAILER WITH A COMPACT VEHICLE INSIDE, THE REAR PASSENGER SIDE INSIDE DUAL TIRE SUDDENLY EXPERIENCED A BLOWOUT. DURING THE TIRE BLOWOUT, WIRES CONNECTING THE LIGHTING SYSTEM THAT W…

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TL* THE CONTACT OWNS A 2017 THOR ACE RV EQUIPPED WITH GOODYEAR G6T0RV TIRES, SIZE: 245/17/R19.5 (NA). WHILE DRIVING APPROXIMATELY 55 MPH AND TOWING A TRAILER WITH A COMPACT VEHICLE INSIDE, THE REAR PASSENGER SIDE INSIDE DUAL TIRE SUDDENLY EXPERIENCED A BLOWOUT. DURING THE TIRE BLOWOUT, WIRES CONNECTING THE LIGHTING SYSTEM THAT WERE LOCATED IN THE WHEEL WELL WERE DAMAGED. THE FAILURE CAUSED ALL THE EXTERIOR LIGHTING TO SHUT OFF, WHICH PREVENTED THE CONTACT FROM SEEING THE ROAD AT NIGHT. THE WIRES WERE REPLACED BY THE OWNER. THE MANUFACTURER AND AN UNKNOWN DEALER WERE NOTIFIED OF THE FAILURE. THE VEHICLE AND TIRE FAILURE MILEAGE WAS 5,000.

NHTSA ODI #11123170

Mileage unknown · Apr 13, 2018
Electrical System

THE ELECTRICAL WIRING WITHIN THE MOTOR COACH IS NOT TO NFPA'S NATIONAL ELECTRICAL CODE NOR IS IT WIRED TO THOR'S OWN FACTORY SPECIFICATIONS. IN ADDITION, THE APPLIANCES WITHIN THE COACH ARE NOT WIRED TO THE SPECIFICATIONS OF THE APPLIANCE MANUFACTURER. OUR MOTOR COACH EXPERIENCED A SHORTED WIRE IN THE WATER HEATER JUNCTION BOX D…

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THE ELECTRICAL WIRING WITHIN THE MOTOR COACH IS NOT TO NFPA'S NATIONAL ELECTRICAL CODE NOR IS IT WIRED TO THOR'S OWN FACTORY SPECIFICATIONS. IN ADDITION, THE APPLIANCES WITHIN THE COACH ARE NOT WIRED TO THE SPECIFICATIONS OF THE APPLIANCE MANUFACTURER. OUR MOTOR COACH EXPERIENCED A SHORTED WIRE IN THE WATER HEATER JUNCTION BOX DUE TO IMPROPER SPLICING IN AN AREA WHERE NO SPLICING SHOULD HAVE BEEN NECESSARY. THAT SAME ELECTRICAL CIRCUIT WHICH, PER THE NEC AND THOR'S FACTORY SPECIFICATIONS SHOULD HAVE BEEN ON A DEDICATED BREAKER, WAS NOT ON A DEDICATED BREAKER WHICH COULD HAVE ALLOWED THE AMPERAGE IN THE JUNCTION BOX TO EXCEED THE BREAKER'S CAPACITY AND HEAT TO THE POINT OF DISINTEGRATING THE WIRE'S INSULATION LEAVING A BARE WIRES. THIS COULD HAVE EASILY LED TO A FIRE. NOT ONLY HAS THIS RESULTED IN LOSS OF USE OF THE APPLIANCE, BUT HAS ALSO RESULTED IN COMPLETE LOSS OF FAITH THAT THE REST OF THE MOTOR HOME IS SAFE FOR HABITATION OR FOR TRAVEL ON PUBLIC ROADS. THIS IS A MATTER OF PUBLIC SAFETY AND SHOULD BE INVESTIGATED FURTHER.

NHTSA ODI #11084963

Official recalls

4

17V758000 · Equipment

Nov 22, 2017

Thor Motor Coach (Thor) is recalling various 2003-2018 recreational vehicles, equipped with Kidde Plastic-Handle or Push Button 'Pindicator' Fire Extinguishers. See a list of the affected trailer models at: https://static.nhtsa.gov/odi/rcl/2017/RMISC-17V758-5764.pdf. These extinguishers may become clogged, preventing the extinguisher from discharging as expected or excessive force may be needed to activate the extinguisher. Additionally, in certain models, the nozzle may detach from the valve assembly with enough force that it could cause injury and also render the product inoperable. For a full list of the affected fire extinguisher models visit: https://static.nhtsa.gov/odi/rcl/2017/RMISC-17E062-5427.pdf

Consequence & remedy

Consequence: In the event of a fire, if the fire extinguisher does not function properly, it can increase the risk of injury.

Remedy: Thor will notify owners, instructing them to contact Kidde for a replacement fire extinguisher, free of charge. The recall began on January 15, 2018. Owners may contact Thor customer service at 1-877-500-1020, or Kidde customer service toll-free at 1-855-262-3540, or online at www.kidde.com and click on "Product Safety Recall" for more information.

17V239000 · Equipment:other:labels; Trailer Hitches

Apr 10, 2017

Thor Motor Coach (TMC) is recalling certain 2017 Ace, Hurricane, and Windsport motorhomes. The weight rating labels for the tow hitches on these vehicles indicate a 10,000lb weight capacity when the actual hitch capacity is 8,000lbs.

Consequence & remedy

Consequence: If the hitch is loaded to the capacity on the label, the hitch may damage the motorhome or the hitch may disconnect from the tow vehicle, increasing the risk of the crash.

Remedy: TMC will notify owners and provide them corrected labels, free of charge. The recall began on May 22, 2017. Owner's may contact TMC customer service at 1-877-500-1020.

Additional source detail variants (2)

Equipment:other:labels

Thor Motor Coach (TMC) is recalling certain 2017 Ace, Hurricane, and Windsport motorhomes. The weight rating labels for the tow hitches on these vehicles indicate a 10,000lb weight capacity when the actual hitch capacity is 8,000lbs.

Consequence: If the hitch is loaded to the capacity on the label, the hitch may damage the motorhome or the hitch may disconnect from the tow vehicle, increasing the risk of the crash.

Remedy: TMC will notify owners and provide them corrected labels, free of charge. The recall began on May 22, 2017. Owner's may contact TMC customer service at 1-877-500-1020.

Trailer Hitches

Thor Motor Coach (TMC) is recalling certain 2017 Ace, Hurricane, and Windsport motorhomes. The weight rating labels for the tow hitches on these vehicles indicate a 10,000lb weight capacity when the actual hitch capacity is 8,000lbs.

Consequence: If the hitch is loaded to the capacity on the label, the hitch may damage the motorhome or the hitch may disconnect from the tow vehicle, increasing the risk of the crash.

Remedy: TMC will notify owners and provide them corrected labels, free of charge. The recall began on May 22, 2017. Owner's may contact TMC customer service at 1-877-500-1020.

16V571000 · Equipment:recreational Vehicle/trailer

Aug 2, 2016

Thor Motor Coach (Thor) is recalling certain model year 2012-2017 Ace, 2013 Citation, 2012-2013 Siesta and 2017 Four Winds and Road Bear Rental motorhomes. The affected vehicles are equipped with shower curtains that may not adequately resist catching fire in the presence of an ignition source. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 302, "Flammability of Interior Materials."

Consequence & remedy

Consequence: A flammable shower curtain may further fuel a fire, increasing the risk of injury.

Remedy: Thor will notify owners, and dealers will replace the shower curtains with curtains made with fire retardant, free of charge. The recall began on September 15, 2016. Owners may contact Thor customer service at 1-877-500-1020. Thor's number for this recall is RC000121.

16V260000 · Seat Belts

Apr 29, 2016

Thor Motor Coach (TMC) is recalling certain model year 2017 ACE and Road Bear Rental motorhomes manufactured February 11, 2016, to March 9, 2016. The seat belt anchorages located in the slide out section may not meet the specified strength requirements, allowing them to pull loose during a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 210, "Seat Belt Assembly Anchorages."

Consequence & remedy

Consequence: If the seat belt anchorages pull loose in a crash, they will not properly restrain the occupant, increasing the risk of injury.

Remedy: TMC will notify owners, and dealers will install reinforcement brackets, and plates, free of charge. The recall began on May 27, 2016. Owners may contact TMC customer service at 1-877-500-1020.

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

1

PE20021 · Trimark 060-1650 Door Latch Failures

Opened Nov 23, 2020 · Closed Dec 13, 2024

Status: closed (inferred from source dates) · Equipment

On November 23, 2020, the Office of Defects Investigation (ODI) opened PE20021 to investigate allegations of inoperative Trimark THP 060-1650 door lock/latches originally equipped on model years (MY) 2015-2017 Class A and Class C motorhomes.ODI received forty-six Vehicle Owner’s Questionnaires (VOQs) describing consumers being locked in or out of their vehicles.The door latch, containing a die-cast zinc plunger, was produced by Equality during calendar years 2014-2016. The die-cast may become porous and brittle over time and can break without warning, causing the vehicle owner to be unable to open the recreational vehicle door equipped with the latch.If the motorhome does not have any other doors such as some Class A models, occupants could be trapped inside, needing to climb out using the emergency exits. If locked out, owners would be unable to easily get in and retrieve children and pets. ODI analyzed the data provided by Trimark in response to its January 27, 2021 information request letter.Although an elevated failure rate was evident on a specific combination of plunger bolt, door lock/latch assembly and door, the data showed that most failures occurred within the first two years of service on the affected 2015-2017 vehicles.This data suggests that component failures generally would have already occurred.Further, ODI data reflects a downward trend in complaints after calendar year 2018 and for post- MY 2016 vehicles.This downward trend may be attributed Trimark's actions in 2016 such as changes in the manufacturing process of its zinc plunger component for the relevant population and its 2016 decision to switch to a steel plunger. In view of the nature of early-life failure, and failure rate trending downward for model years 2017 and newer, this Preliminary Evaluation (PE) is closed.  The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist.The Agency reserves the right to take additional action if warranted by future circumstances. To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.