IllustrationLeaking fuel on rear passenger side. Strong fuel smell inside cabin.
2011 Dodge Challenger
Owner reports · Recalls · Investigations
More warning signs than most Challenger years
Owner complaints for the 2011 Dodge Challenger are substantially higher than the model-year median of 45.
About this comparison →How this year compares
Owner complaints by model year
Compare all Challenger years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
210–25K
4125–50K
4950–75K
1975–100K
13100–150K
2150K+
145 reports with mileage · 48 unknown
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 103 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Air Bags. Review the 35 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 23 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
5 crash reports8 fire reports4 injury reports
Fuel/propulsion System complaints
17 reportsTHE AUXILIARY FUEL PUMP MODULE DEVELOPED A CRACK AND STARTED LEAKING A LARGE AMOUNT OF FUEL. THE TOP OF THE FUEL TANK HAD A LARGE PUDDLE OF FUEL AND IT WAS RUNNING DOWN ALL SIDE OF THE FUEL TANK AND ON TO THE GROUND. THIS IS A MAJOR FIRE HAZARD. ALSO THERE ARE ACCESS PANELS UNDER THE BACK SEAT AREA OF THE CAR TO REPLACE THE PUM…
Read full complaint
THE AUXILIARY FUEL PUMP MODULE DEVELOPED A CRACK AND STARTED LEAKING A LARGE AMOUNT OF FUEL. THE TOP OF THE FUEL TANK HAD A LARGE PUDDLE OF FUEL AND IT WAS RUNNING DOWN ALL SIDE OF THE FUEL TANK AND ON TO THE GROUND. THIS IS A MAJOR FIRE HAZARD. ALSO THERE ARE ACCESS PANELS UNDER THE BACK SEAT AREA OF THE CAR TO REPLACE THE PUMP MODULES. FUMES FROM THE FUEL ENTERED THE CAR FROM THOSE ACCESS POINTS AND MADE IT ALMOST IMPOSSIBLE TO BE INSIDE THE CAR. I FIRST NOTICED THE SMELL AFTER FILLING THE THE FUEL TANK AND WHEN I GOT HOME I NOTICED THE FUEL RUNNING OUT ON TO MY DRIVEWAY.
PASSENGER SIDE AUXILIARY FUEL MODULE LEAKING GASOLINE UNDER REAR SEAT. OLD SEAL REPLACED, BUT UNIT STILL LEAKS GASOLINE WHEN THE TANK IS MORE THAN 3/4 FULL. STARTED LEAKING OVER A YEAR AGO, WITH LESS THAN 100,000 MILES ON THE CAR. I NOTICED IT AFTER FILLING THE CAR'S GAS TANK AT A LOCAL GAS STATION.
ISSUES WITH FUEL. HAVING TO CONSTANTLY REPLACE FUEL CAP. CLUTCH GETS STUCK.
HELLO SO I WAS GOING THROUGH DRIVETHRU AND ALL OF A SUDDEN THE CAR STARTED RUBBLING AND IT STOP AND DIDN'T KNOW TO DO BECAUSE I WAS STUCK IN THE MIDDLE. SO I TURNT OFF THE CAR AND TURNT IT BACK ON AND IT WOULDN'T START IT WILL JUST MAKE THE RUBBLING SOUND I DID A JUMP AND STILL NOTHING AT ALL.
NOTICED FLUID LEAKING IN FRONT OF REAR PASSENGER TIRE.UPON FURTHER INSPECTION I FOUND IT TO BE GASOLINE. THEN I LOOKED UNDER THE REAR SEAT AND FOUND A PUDDLE OF GASOLINE ACCUMULATED IN THE FUEL PUMP AREA ON THE RIGHT SIDE. THE CAR HAD BEEN PARKED SO THE PUDDLE ON THE GROUND AND UNDER THE SEAT WERE VERY NOTICEABLE. THIS IS NOT SA…
Read full complaint
NOTICED FLUID LEAKING IN FRONT OF REAR PASSENGER TIRE.UPON FURTHER INSPECTION I FOUND IT TO BE GASOLINE. THEN I LOOKED UNDER THE REAR SEAT AND FOUND A PUDDLE OF GASOLINE ACCUMULATED IN THE FUEL PUMP AREA ON THE RIGHT SIDE. THE CAR HAD BEEN PARKED SO THE PUDDLE ON THE GROUND AND UNDER THE SEAT WERE VERY NOTICEABLE. THIS IS NOT SAFE AT ALL!!!
GAS TANK LEAKING AT SEAM WHERE THE TWO HALVES OF THE GAS TANK ARE PUT TOGETHER. THE GAS TANK IS MADE OUT OF PLASTIC WHICH IS BY THE EXHAUST SYSTEM WHICH IS VERY HOT AND COULD CAUSE FIRE OR EXPLOSION . MAN AT DEALERSHIP PARTS DEPARTMENT SAID THIS WAS COMMON ,BUT NOT ENOUGH COMPLAINTS HAVE BEEN FILED TO DO A RECALL. CAR CAN BE ST…
Read full complaint
GAS TANK LEAKING AT SEAM WHERE THE TWO HALVES OF THE GAS TANK ARE PUT TOGETHER. THE GAS TANK IS MADE OUT OF PLASTIC WHICH IS BY THE EXHAUST SYSTEM WHICH IS VERY HOT AND COULD CAUSE FIRE OR EXPLOSION . MAN AT DEALERSHIP PARTS DEPARTMENT SAID THIS WAS COMMON ,BUT NOT ENOUGH COMPLAINTS HAVE BEEN FILED TO DO A RECALL. CAR CAN BE STATIONARY OR IN MOTION AND YOU CAN SMELL GAS INSIDE THE CAR. WHEN CAR IS PARKED YOU CAN ALSO SMELL GAS IN THE TRUNK AND OUTSIDE THE CAR.
GASOLINE VAPORS INSIDE PASSENGER CABIN WHILE DRIVING CAR. FUEL RAIL WAS LEAKING AT SEAM AND REQUIRED REPLACEMENT ALONG WITH FUEL INJECTOR O-RINGS.
VEHICLE LEAKS FUEL WHEN YOU FILL THE GAS TANK COMPLETELY. VERY UNSAFE AND LIFE THREATENING AS THIS IS A FIRE/EXPLOSION HAZARD. CHILDREN RIDE IN THESE VEHICLES. VEHICLE WAS PARKED AND TURNED OFF AT THE GAS STATION WHILE AND AFTER FILLING UP. 1/4 TAKE OF GAS DRIPPED OUT WITHIN 24 HOURS. I ALSO HAVE A VIDEO OF IT DRIPPING BUT …
Read full complaint
VEHICLE LEAKS FUEL WHEN YOU FILL THE GAS TANK COMPLETELY. VERY UNSAFE AND LIFE THREATENING AS THIS IS A FIRE/EXPLOSION HAZARD. CHILDREN RIDE IN THESE VEHICLES. VEHICLE WAS PARKED AND TURNED OFF AT THE GAS STATION WHILE AND AFTER FILLING UP. 1/4 TAKE OF GAS DRIPPED OUT WITHIN 24 HOURS. I ALSO HAVE A VIDEO OF IT DRIPPING BUT CANNOT UPLOAD.
TL* THE CONTACT OWNS A 2011 DODGE CHALLENGER. WHEN THE VEHICLE WAS FILLED WITH FUEL, THE CONTACT SMELLED FUEL FUMES INSIDE THE CABIN. IN ADDITION, THE VEHICLE LEAKED FUEL FROM UNDER THE VEHICLE NEXT TO THE REAR PASSENGER TIRE. THE MANUFACTURER WAS NOTIFIED OF THE ISSUE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPRO…
Read full complaint
TL* THE CONTACT OWNS A 2011 DODGE CHALLENGER. WHEN THE VEHICLE WAS FILLED WITH FUEL, THE CONTACT SMELLED FUEL FUMES INSIDE THE CABIN. IN ADDITION, THE VEHICLE LEAKED FUEL FROM UNDER THE VEHICLE NEXT TO THE REAR PASSENGER TIRE. THE MANUFACTURER WAS NOTIFIED OF THE ISSUE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 46,959.
Official recalls
619V018000 · Air Bags:frontal:passenger Side:inflator Module
Jan 15, 2019
Chrysler (FCA US LLC) is recalling certain 2010 Dodge Ram 3500, Ram 4500/5500, 2010-2011 Dodge Dakota, 2010-2014 Dodge Challenger, 2010-2015 Dodge Challenger, Chrysler 300, and 2010-2016 Jeep Wrangler vehicles. Upon deployment of the driver's frontal air bag, excessive internal pressure may cause the inflator to explode.
Consequence & remedy
Consequence: In the event of a crash necessitating deployment of the passenger's frontal air bag, the inflator could explode with metal fragments striking the vehicle occupants potentially resulting in serious injury or death.
Remedy: Owners are advised not to drive their vehicle until the recall repair is complete. Chrysler will notify owners, and dealers will replace the passenger frontal air bag inflator, free of charge. The recall began February 4, 2019. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is V01.
18V021000 · Air Bags:frontal:passenger Side:inflator Module
Jan 9, 2018
Chrysler (FCA US LLC) is recalling certain 2009-2013 Jeep Wrangler, Chrysler 300, Dodge Challenger and Dodge Charger vehicles, and 2009-2011 Dodge Dakota vehicles sold, or ever registered, in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A." Additionally, Chrysler is recalling certain 2009-2010 RAM 4500 Cab Chassis, RAM 5500 Cab Chassis, RAM 3500 Cab Chassis, Jeep Wrangler, Chrysler 300, Dodge Dakota, Dodge Challenger, and Dodge Charger vehicles ever registered in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia or "Zone B." Chrysler is also recalling certain 2009 RAM 3500, RAM 2500, RAM 4500 Cab Chassis, RAM 5500 Cab Chassis, Dodge Durango, Chrysler Aspen, RAM 3500 Cab Chassis, Jeep Wrangler, Chrysler 300, Dodge Dakota, Dodge Challenger, and Dodge Charger vehicles ever registered in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming. In the event of a crash necessitating deployment of the passenger frontal air bag, these passenger air bag inflator may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
Consequence & remedy
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.
Remedy: Owners are advised not to drive their vehicle until the recall repair is complete. Chrysler will notify owners, and dealers will replace the passenger frontal air bag inflator, free of charge. The recall began February 28, 2018. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is U03.
17V435000 · Electrical System:alternator/generator/regulator
Jul 10, 2017
Chrysler (FCA US LLC) is recalling certain model year 2011-2014 Dodge Challenger, Dodge Charger, Chrysler 300, Dodge Durango, and 2012-2014 Jeep Grand Cherokee vehicles. The affected vehicles have electro-hydraulic power steering (EHPS) and are equipped with a 5.7L or a 3.6L engine and a 160, 180 or 220 amp alternator. In the affected vehicles, the alternator may suddenly fail.
Consequence & remedy
Consequence: If the alternator fails, the vehicle may stall without warning, increasing the risk of a crash. There is also the possibility that the alternator may short circuit, increasing the risk of a fire.
Remedy: Chrysler will notify owners, and dealers will inspect the alternator and depending on the part number, will replace the alternator, if necessary, free of charge. The recall began February 12, 2018. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is T36.
16V352000 · Air Bags:frontal:passenger Side:inflator Module
May 24, 2016
Chrysler (FCA US LLC) expanded the affected population to include 73,712 2005-2009 RAM 2500 trucks produced at the St. Louis North Assembly Plant. With this change, Chrysler is recalling certain model year 2004-2008 RAM 1500, 2005-2009 RAM 2500, 2006-2009 RAM 3500, 2007-2010 RAM 3500 Cab Chassis, 2008-2010 RAM 4500 and 5500 Cab Chassis, 2004-2009 Dodge Durango, 2007-2009 Chrysler Aspen, 2007-2012 Jeep Wrangler, 2008-2012 Dodge Challenger, 2005-2008 Dodge Magnum, 2005-2012 Chrysler 300, 2006-2012 Dodge Charger, 2005-2011 Dodge Dakota, and 2006-2009 Mitsubishi Raider vehicles originally sold, or ever registered, in AL, CA, FL, GA, HI, LA, MS, SC, TX, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands, or "Zone A." Additionally, unless included in "Zone A" above, Chrysler is also recalling 2004-2008 RAM 1500, 2005-2009 RAM 2500, 2006-2009 RAM 3500, 2007-2009 RAM 3500 Cab Chassis, 2008-2009 RAM 4500 and 5500 Cab Chassis, 2004-2009 Dodge Durango, 2007-2009 Chrysler Aspen, 2007-2009 Jeep Wrangler, 2008-2009 Dodge Challenger, 2005-2008 Dodge Magnum, 2005-2009 Chrysler 300, 2006-2009 Dodge Charger, 2005-2009 Dodge Dakota and 2006-2009 Mitsubishi Raider vehicles originally sold, or ever registered, in AZ, AR, DE, Washington D.C., IL, IN, KS, KY, MD, MO, NE, NV, NJ, NM, NC, OH, OK, PA, TN, VA, and WV, or "Zone B." Lastly, unless included in "Zone A" or "Zone B" above, Chrysler is recalling certain 2005-2008 RAM 2500, 2006-2008 RAM 3500, 2007-2008 RAM 3500 Cab Chassis, 2008 RAM 4500 and 5500 Cab Chassis, 2004-2008 Dodge Durango, 2007-2008 Chrysler Aspen, 2007-2008 Jeep Wrangler, 2008 Dodge Challenger, 2005-2008 Dodge Magnum, 2005-2008 Chrysler 300, 2006-2008 Dodge Charger, 2005-2008 Dodge Dakota, and 2006-2008 Mitsubishi Raider vehicles originally sold, or registered, in AK, CO, CT, ID, IA, ME, MA, MI, MN, MT, NH, NY, ND, OR, RI, SD, UT, VT, WA, WI, and WY.
Consequence & remedy
Consequence: These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules, and used as original equipment or replacement equipment. These inflators may rupture due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling. An inflator rupture may result in metal fragments striking the vehicle occupants resulting in serious injury or death.
Remedy: Owners are advised not to drive their vehicle until the recall repair is complete. Chrysler will notify the Chrysler, Dodge, Jeep and RAM owners. Mitsubishi owners will be notified by their company. Dealers will replace the passenger frontal air bag inflator, free of charge. The recall began on March 27, 2017. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is S43. Note: This recall supersedes recall 14V-7700.
14V634000 · Electrical System:alternator/generator/regulator
Oct 8, 2014
Chrysler Group LLC (Chrysler) is recalling certain model year 2011-2014 Chrysler 300, Dodge Charger, Challenger, and Durango; and 2012-2014 Jeep Grand Cherokee vehicles manufactured April 22, 2010, to January 2, 2014, and equipped with a 3.6L engine and a 160 amp alternator. In the affected vehicles, the alternator may suddenly fail.
Consequence & remedy
Consequence: If the alternator fails, the vehicle may stall without warning, increasing the risk of a crash.
Remedy: Chrysler has notified owners, and dealers will replace the alternator, free of charge. The recall began on February 27, 2015. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is P60.
13V118000 · Air Bags
Apr 3, 2013
Chrysler Group LLC (Chrysler) is recalling certain model year 2011-2012 Chrysler 300, Dodge Challenger, and Dodge Charger vehicles manufactured April 11, 2011, through December 14, 2011. The affected vehicles may have improperly sized terminal crimps on the seat side-airbag wiring harness which may cause the seat side-airbags to malfunction and illuminate the airbag warning light.
Consequence & remedy
Consequence: In the event of a crash necessitating airbag deployment the airbags may not operate as designed, increasing the risk of injury.
Remedy: Chrysler will notify owners, and dealers will replace both driver and passenger seat airbag wiring harnesses, free of charge. The recall began on April 22, 2013. Owners may contact Chrysler at 1-800-247-9753. Chrysler's recall campaign number is N07.
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
1EA21002 · Desiccated Air Bag Inflator Rupture
Opened Sep 17, 2021 · No close date supplied
Status: open (inferred from source dates) · Air Bags:frontal:driver Side:inflator Module; Air Bags:frontal:passenger Side:inflator Module
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled inflators was, or will be, an inflator using either propellant 2004 or 2004L that does contain a desiccant. None of these "desiccated" remedy parts (which were installed in older model year vehicles) are currently under recall for a degradation concern. Certain subsets of desiccated PSAN inflators using propellant 2004 for use as original equipment, however, have been recalled for a degradation concern. All Takata inflators produced with propellant 2004L contain desiccant, and none of these desiccated inflators using propellant 2004L are under recall for a degradation concern. There have been no reported field ruptures in any non-recalled desiccated PSAN inflators.It is understood that desiccants fully saturate at some threshold, at which point any additional moisture will not be captured. This means the degradation process observed in non-desiccated inflators using propellant 2004 may also occur in non-recalled desiccated inflators using propellant 2004, assuming additional moisture enters the inflator and high temperature cycling occurs. Based on available information, desiccant saturation can occur within the first five years in the worst environments, and the time required for full saturation is affected by multiple factors. While no present safety risk has been identified, further work is needed to evaluate the future risk of non-recalled desiccated inflators using propellant 2004.Three entities -- Takata (now known as TK Global), the Independent Testing Coalition, and Exponent -- have been studying the long-term behavior of Takata desiccated PSAN inflators using propellant 2004L (as well as 2004) in the presence of moisture and temperature cycling. The research efforts, which include development of predictive modeling techniques and field sample analysis, are ongoing. To date, none of the researchers have identified field evidence showing that propellant 2004L is undergoing a degradation process that leads to aggressive deployment and potential rupture. However, the time in service of such inflators remains short compared to that of the inflators using propellant 2004. Further study is needed to assess the long-term safety of desiccated inflators using propellant 2004L.The Office of Defects Investigation is opening this investigation to examine whether a safety defect related to propellant degradation exists in non-recalled desiccated PSAN frontal inflators manufactured by Takata. This investigation will require extensive information on Takata production processes and surveys of inflators in the field. Lists of recall actions that may have used desiccated PSAN inflators as remedy parts, as well as the makes and models originally manufactured with them, is available with the downloadable version of this document (see nhtsa.gov/recalls?nhtsaId=EA21002 -- note this information is subject to change/revision as the investigation proceeds). This investigation does not supersede EA15-001, which remains open.
Additional source detail variants (2)
Air Bags:frontal:driver Side:inflator Module
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled inflators was, or will be, an inflator using either propellant 2004 or 2004L that does contain a desiccant. None of these "desiccated" remedy parts (which were installed in older model year vehicles) are currently under recall for a degradation concern. Certain subsets of desiccated PSAN inflators using propellant 2004 for use as original equipment, however, have been recalled for a degradation concern. All Takata inflators produced with propellant 2004L contain desiccant, and none of these desiccated inflators using propellant 2004L are under recall for a degradation concern. There have been no reported field ruptures in any non-recalled desiccated PSAN inflators.It is understood that desiccants fully saturate at some threshold, at which point any additional moisture will not be captured. This means the degradation process observed in non-desiccated inflators using propellant 2004 may also occur in non-recalled desiccated inflators using propellant 2004, assuming additional moisture enters the inflator and high temperature cycling occurs. Based on available information, desiccant saturation can occur within the first five years in the worst environments, and the time required for full saturation is affected by multiple factors. While no present safety risk has been identified, further work is needed to evaluate the future risk of non-recalled desiccated inflators using propellant 2004.Three entities -- Takata (now known as TK Global), the Independent Testing Coalition, and Exponent -- have been studying the long-term behavior of Takata desiccated PSAN inflators using propellant 2004L (as well as 2004) in the presence of moisture and temperature cycling. The research efforts, which include development of predictive modeling techniques and field sample analysis, are ongoing. To date, none of the researchers have identified field evidence showing that propellant 2004L is undergoing a degradation process that leads to aggressive deployment and potential rupture. However, the time in service of such inflators remains short compared to that of the inflators using propellant 2004. Further study is needed to assess the long-term safety of desiccated inflators using propellant 2004L.The Office of Defects Investigation is opening this investigation to examine whether a safety defect related to propellant degradation exists in non-recalled desiccated PSAN frontal inflators manufactured by Takata. This investigation will require extensive information on Takata production processes and surveys of inflators in the field. Lists of recall actions that may have used desiccated PSAN inflators as remedy parts, as well as the makes and models originally manufactured with them, is available with the downloadable version of this document (see nhtsa.gov/recalls?nhtsaId=EA21002 -- note this information is subject to change/revision as the investigation proceeds). This investigation does not supersede EA15-001, which remains open.
Air Bags:frontal:passenger Side:inflator Module
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled inflators was, or will be, an inflator using either propellant 2004 or 2004L that does contain a desiccant. None of these "desiccated" remedy parts (which were installed in older model year vehicles) are currently under recall for a degradation concern. Certain subsets of desiccated PSAN inflators using propellant 2004 for use as original equipment, however, have been recalled for a degradation concern. All Takata inflators produced with propellant 2004L contain desiccant, and none of these desiccated inflators using propellant 2004L are under recall for a degradation concern. There have been no reported field ruptures in any non-recalled desiccated PSAN inflators.It is understood that desiccants fully saturate at some threshold, at which point any additional moisture will not be captured. This means the degradation process observed in non-desiccated inflators using propellant 2004 may also occur in non-recalled desiccated inflators using propellant 2004, assuming additional moisture enters the inflator and high temperature cycling occurs. Based on available information, desiccant saturation can occur within the first five years in the worst environments, and the time required for full saturation is affected by multiple factors. While no present safety risk has been identified, further work is needed to evaluate the future risk of non-recalled desiccated inflators using propellant 2004.Three entities -- Takata (now known as TK Global), the Independent Testing Coalition, and Exponent -- have been studying the long-term behavior of Takata desiccated PSAN inflators using propellant 2004L (as well as 2004) in the presence of moisture and temperature cycling. The research efforts, which include development of predictive modeling techniques and field sample analysis, are ongoing. To date, none of the researchers have identified field evidence showing that propellant 2004L is undergoing a degradation process that leads to aggressive deployment and potential rupture. However, the time in service of such inflators remains short compared to that of the inflators using propellant 2004. Further study is needed to assess the long-term safety of desiccated inflators using propellant 2004L.The Office of Defects Investigation is opening this investigation to examine whether a safety defect related to propellant degradation exists in non-recalled desiccated PSAN frontal inflators manufactured by Takata. This investigation will require extensive information on Takata production processes and surveys of inflators in the field. Lists of recall actions that may have used desiccated PSAN inflators as remedy parts, as well as the makes and models originally manufactured with them, is available with the downloadable version of this document (see nhtsa.gov/recalls?nhtsaId=EA21002 -- note this information is subject to change/revision as the investigation proceeds). This investigation does not supersede EA15-001, which remains open.