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2015 Thor Motor Coach Siesta

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

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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: 1 of 1 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 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Equipment. 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 reports1 fire reports0 injury reports

Electrical System complaints

1 reports
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80 miles · Nov 6, 2019
Electrical SystemEquipmentFire

TL* THE CONTACT OWNS A 2015 THOR SIESTA EQUIPPED WITH A CUMMINS 3.6 KW GENERATOR. THE CONTACT ATTEMPTED TO START THE GENERATOR, BUT WAS UNSUCCESSFUL. IN ADDITION, THERE WAS AN ABNORMAL ODOR IN THE VEHICLE PRIOR TO THE FAILURE. THE GENERATOR WAS TAKEN TO CUMMINS SALES AND SERVICE (12 INTEGRA DR, CONCORD, NH 03301, (207) 510-2233)…

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TL* THE CONTACT OWNS A 2015 THOR SIESTA EQUIPPED WITH A CUMMINS 3.6 KW GENERATOR. THE CONTACT ATTEMPTED TO START THE GENERATOR, BUT WAS UNSUCCESSFUL. IN ADDITION, THERE WAS AN ABNORMAL ODOR IN THE VEHICLE PRIOR TO THE FAILURE. THE GENERATOR WAS TAKEN TO CUMMINS SALES AND SERVICE (12 INTEGRA DR, CONCORD, NH 03301, (207) 510-2233) WHERE THE CONTACT WAS INFORMED THAT THE WIRES IN THE TRANSFER SWITCH WERE MELTED AND THAT IT WAS A THERMAL EVENT. THE GENERATOR WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND INFORMED THE CONTACT THAT IT WAS DUE TO A POWER SURGE. THE FAILURE MILEAGE WAS 80. THE VIN WAS UNKNOWN.

NHTSA ODI #11278413

Official recalls

3

19V714000 · Equipment:other:labels

Oct 8, 2019

Thor Motor Coach (TMC) is recalling certain 2014 Tuscany 36M, 40E, 2015 Citation 24SL, Siesta 24SL, Axis 25.1 and Vegas 25.1, 2016 Four Winds 31E, 31W, 35SF, Chateau 31E, 31W, Synergy SD24, Citation 24SL, 24SS and Siesta 24SL, 24SS, 2017 Four Winds 31E, 31W, Chateau 31E, 35SD, Citation 24SS and Siesta 24SS, 2018 Citation 24SS and Siesta 24SS, 2019 Quantum CR24, Four Winds 24BL, Citation 24MB and Siesta 24MB and 2020 Quantum CR24, Citation 24MB, Siesta 24MB, Chateau 24BL and Synergy 24MB vehicles. The Occupant and Cargo Carrying Capacity (OCCC) label has the incorrect carrying capacity listed, which can allow the vehicle to be overloaded. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 120, "Wheels and Rims - Other Than Passenger Cars."

Consequence & remedy

Consequence: An inadvertently overloaded motorhome due to an incorrect carrying capacity can increase the risk of a crash.

Remedy: TMC will notify owners, and dealers will issue new OCCC labels with correct seating positions and weight calculations, free of charge. The recall began November 21, 2019. Owners may contact TMC customer service at 1-877-855-2867. TMC's number for this recall is RC000176.

15V745000 · Equipment:recreational Vehicle/trailer

Nov 10, 2015

Thor Motor Coach (Thor) is recalling certain model year 2011-2016 Thor Challenger, Thor Citation, Thor Hurricane, Thor Tuscany, Thor Windsport, 2011-2012 Thor Astoria, Thor Avanti, Thor Chateau, 2011-2014 Thor Daybreak, 2011-2015 Thor Outlaw, Thor Siesta, 2014-2015 Thor Miramar, 2012 Thor Four Winds, 2008-2011 Damon Astoria, Damon Daybreak, Damon Outlaw, Damon Tuscany, 2008-2012, Damon Challenger, 2008-2010 Damon Essence, 2009-2011 Damon Avanti, Four Winds Chateau, Four Winds Citation, Four Winds Four Winds, Four Winds Hurricane, Four Winds Siesta, Four Winds Windsport, 2009-2010 Four Winds Dorado, Four Winds Dutchmen, Four Winds Magellan, Four Winds Mandalay and 2009 Four Winds Fun Mover, and Four Winds Presidio motorhomes. The affected vehicles are equipped with certain Lippert-brand Coachstep Double and Triple Electric Steps. These steps use a bolt to attach the fan gear assembly to the steps. This bolt may fracture allowing the fan gear to disengage from the steps. As a result, the steps may not remain in the expected position and may be unstable.

Consequence & remedy

Consequence: Unstable entry and exit steps increase the risk of injury.

Remedy: Thor will notify owners, and dealers will install a retainer bracket to reinforce the operating mechanism and replace all of the affected bolts, free of charge. The recall began on January 6, 2016. Owners may contact Thor customer service at 1-877-855-2867. Thor's number for this recall is RC000111.

15V191000 · Structure:body:roof And Pillars

Mar 31, 2015

Thor Motor Coach (Thor) is recalling certain model year 2015 Siesta and Citation motorhomes manufactured from September 26, 2014, through February 27, 2015, and built on a Mercedes-Benz Sprinter chassis. In the affected vehicles, the abutting wedge, a component attached to the door jamb to make opening the door easier after a severe frontal crash, may have been installed incorrectly.

Consequence & remedy

Consequence: If a vehicle that has an incorrectly installed abutting wedge is involved in a severe frontal crash, a greater force may be necessary to open the doors, increasing the risk of injury.

Remedy: Mercedes-Benz will notify owners on behalf of Thor, and dealers will inspect and, if necessary, correct the installation of the abutting wedge, free of charge. The recall began on March 23, 2015. Owners may contact Thor customer service at 1-877-500-1020 or owners may contact Sprinter Customer Service at 1-877-762-8267.

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

0

No exact-year investigations in this snapshot.