IllustrationHYDROLIC BOOSTER IS LEAKING INSIDE COACH AND DRIPPING UNDER BRAKE PEDAL. I NOTICE IT MORE WHEN ENGINE IS COLD.
2014 Thor Motor Coach Ace
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 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.
- Latches/locks/linkages. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. 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
What owners actually said
3 reportsBOUGHT RV FALL 2017. WHILE PARKED IN GARAGE, COULDNT GET IN BECAUSE DOOR LOCKED BY ITSELF. HAD TO BREAK INTO RV AND TAKE DOOR HANDLE OFF AS KEYS WOULD NOT OPEN IT OR MANUAL OPERATION WOULD NOT OPEN IT. REFUSED TO PURCHASE ANOTHER REPLACEMENT FOR FEAR OF THIS HAPPENING AGAIN. VERY POOR DESIGN. THE POP ALUMINUM SLAVE BROKE WITH NO…
Read full complaint
BOUGHT RV FALL 2017. WHILE PARKED IN GARAGE, COULDNT GET IN BECAUSE DOOR LOCKED BY ITSELF. HAD TO BREAK INTO RV AND TAKE DOOR HANDLE OFF AS KEYS WOULD NOT OPEN IT OR MANUAL OPERATION WOULD NOT OPEN IT. REFUSED TO PURCHASE ANOTHER REPLACEMENT FOR FEAR OF THIS HAPPENING AGAIN. VERY POOR DESIGN. THE POP ALUMINUM SLAVE BROKE WITH NORMAL OPENING AND CLOSING OF DOOR. WE JUST CAME BACK FROM A FAMILY VACATION AND WOULD HAVE HATED TO THINK WHAT WOULD/COULD HAVE HAPPENED WITH 2 SMALL DOGS AND 2 CHILDREN. *TT *JS
TL* THE CONTACT OWNS A 2014 THOR ACE. WHILE DRIVING VARIOUS SPEEDS IN THE RAIN, THE WINDSHIELD WIPERS FAILED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE RELAY BOX FILLED UP WITH WATER. THE VEHICLE'S RELAYS WERE REPLACED AND THE POSITION OF THE BOX WAS MOVED TO PREVENT WATER INTRUSION. THE…
Read full complaint
TL* THE CONTACT OWNS A 2014 THOR ACE. WHILE DRIVING VARIOUS SPEEDS IN THE RAIN, THE WINDSHIELD WIPERS FAILED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE RELAY BOX FILLED UP WITH WATER. THE VEHICLE'S RELAYS WERE REPLACED AND THE POSITION OF THE BOX WAS MOVED TO PREVENT WATER INTRUSION. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 17,000.
Official recalls
417V758000 · 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.
17V555000 · Visibility:windshield Wiper/washer
Sep 7, 2017
Thor Motor Coach (TMC) is recalling certain 2014-2016 Ace, Challenger, Daybreak, Hurricane, Miramar, Outlaw, Windsport, Palazzo, Tuscany, and Tuscany XTE motorhomes. The windshield wipers may fail due to the system being incorrectly installed or secured.
Consequence & remedy
Consequence: If the windshield wipers cannot be used, driver visibility would be reduced, increasing the risk of a crash.
Remedy: TMC will notify owners, and dealers will inspect the wiper system to verify it is installed correctly, repairing or replacing the system as necessary, free of charge. The recall began on September 27, 2017. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000146. Note: Although some of the vehicles included in this recall have previously been remedied under recalls 17V-096 or 17V-162, the vehicles may need additional repairs under this campaign.
17V162000 · Visibility:windshield Wiper/washer
Mar 13, 2017
Thor Motor Coach (TMC) is recalling certain 2014-2015 ACE, Hurricane, Challenger, Daybreak, Miramar, Outlaw, and Windsport motorhomes. These vehicles have windshield wiper systems that may have been improperly installed and secured, possibly causing the wipers to fail during use.
Consequence & remedy
Consequence: Failure of the windshield wipers may impair the driver's visibility, increasing the risk of a crash.
Remedy: TMC has notified owners, and dealers will inspect and tighten the wiper arm securing nuts, free of charge. The recall began on May 5, 2017. Owners may contact TMC customer service at 1-877-855-2867.
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.
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
1PE20021 · 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.