NHTSA owner reports · September 18, 2026 snapshot.
Engine complaints
53 reportsClear category filterMileage unknown · May 13, 2025
EngineEngine And Engine Cooling
The contact owns a 2016 Subaru Outback. The contact stated that there was an exhaust odor entering into the cabin of the vehicle, which was most noticeable when the heater was activated. The contact stated that while the vehicle was idling, there was an abnormally loud sound as if the exhaust was releasing in large amount of fum…
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The contact owns a 2016 Subaru Outback. The contact stated that there was an exhaust odor entering into the cabin of the vehicle, which was most noticeable when the heater was activated. The contact stated that while the vehicle was idling, there was an abnormally loud sound as if the exhaust was releasing in large amount of fumes. There were no warning lights illuminated. The contact stated that the failure was related to the emissions and was related to NHTSA ID Number: 10182196 (Engine and Engine Cooling, Equipment, Equipment Adaptive/Mobility). The vehicle was not diagnosed or repaired. The manufacturer was informed of the failure and confirmed that the VIN was not covered under NHTSA ID Number: 10182196 (Engine and Engine Cooling, Equipment, Equipment Adaptive/Mobility) or under warranty. The manufacturer opened a case and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was unknown.
NHTSA ODI #11660635
Mileage unknown · Jan 21, 2025
Engine
Original owner of a 2016 Subaru Outback 2.5L, took in to Midas for small exhaust leak. Midas found that the Exhaust Pipe Front Bellows was cracking. They sent me a quote to repair the bellows and also a print out of Service Program Bulletin Number WUJ-95R n the 2015-2016MY Outback 2.5L referring to the Exhaust Pipe Front (EPF) B…
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Original owner of a 2016 Subaru Outback 2.5L, took in to Midas for small exhaust leak. Midas found that the Exhaust Pipe Front Bellows was cracking. They sent me a quote to repair the bellows and also a print out of Service Program Bulletin Number WUJ-95R n the 2015-2016MY Outback 2.5L referring to the Exhaust Pipe Front (EPF) Bellows Cracking. I called to speak with Subaru's corporate recall center and they said my VIN was not part of the recall, however, my car was manufactured in 2015 and is having the exact same issues as the other 2016 Subaru Outback 2.5L. Our safety is being put at risk as CO (carbon monoxide) is leaking into the vehicle due to the cracking in the Exhaust Pipe Front Bellows.
NHTSA ODI #11637415
Mileage unknown · Oct 21, 2024
EngineFuel/propulsion SystemService Brakes
The left front drive axel cracked while we were driving on an overpass connecting two highways. We didn’t hit or bump anything. The car just stopped, like the brakes were slammed on, except the brakes didn’t work. As we were on an incline, the car started rolling backwards, but fortunately the emergency brake worked. It happened…
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The left front drive axel cracked while we were driving on an overpass connecting two highways. We didn’t hit or bump anything. The car just stopped, like the brakes were slammed on, except the brakes didn’t work. As we were on an incline, the car started rolling backwards, but fortunately the emergency brake worked. It happened so abruptly, I wasn’t able to fully pull off the road and my children in the back seat were screaming for their lives as truck after truck whizzed by rattling our car with their horns blaring missing us by inches. The police and fire trucks eventually blocked us from traffic until we could get a tow. The engine worked, but we couldn’t get into any gear. The mechanic said it must’ve been a faulty part to have gone like that. When the axel broke, it damaged the front differential and the transmission so the car isn’t very drivable. On a less dramatic note, a month earlier, both back doors stopped working on the same day!! The child locks failed and the doors couldn’t be opened. I consider this a safety hazard, so we spent $$$ to fix it. As we take good care of our car, I am very curious why it’s failing so spectacularly all at once.
NHTSA ODI #11621014
Mileage unknown · Aug 13, 2024
Engine
Excessive oil consumption. Have to add a quart every 3300 miles. Twice in last two months on highway and city street, low oil warning came on. Mileage on auto is 72000 miles. All scheduled maintenance performed by Subaru dealer.
NHTSA ODI #11608302
Mileage unknown · Jul 26, 2024
Engine
There is a strong smell of engine exhaust in the cabin as other people have submitted similar complaints.
NHTSA ODI #11604741
Mileage unknown · Jul 20, 2024
Engine
Recently, My daughter noticed the strong smell of exhaust in the car. It turns out the there is a leak in the exhaust manifold. Subaru issued SERVICE PROGRAM BULLETIN WUJ-95R to address a issue where a bellows in the exhaust cracked and allowed the leakage of exhaust gases in front of the CC, releasing noxious gases into the a…
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Recently, My daughter noticed the strong smell of exhaust in the car. It turns out the there is a leak in the exhaust manifold. Subaru issued SERVICE PROGRAM BULLETIN WUJ-95R to address a issue where a bellows in the exhaust cracked and allowed the leakage of exhaust gases in front of the CC, releasing noxious gases into the air and into the driver compartment. Problem is they only applied this to a small amount of the production of the 2016 outback. This issue has been occurring on 2015 to 2019 models since and they did not include them in the recall. To fix this issue because of a design flaw the CC (Catalytic Converter) also needs to be replaced at a cost of over 3000 dollars. My ask is that they should extend this recall to cover all the cars with this design as it is a serious health issue to drivers of the cars. This is not an issue where rust is causing exhaust to break out, This is a manufacturing design issue where cars are having the issue which were only a couple years old. In my case, the Bellows in question were replaced by the previous owner at less than 4 years old and I did not know about that. So when that repair failed(not the permanent fix offered in the service bulletin) Subaru told me I am on my own though the CC should be covered to 150K in New York State. I feel they should be responsible to address this issue for all the models with the defective design.
NHTSA ODI #11603563
Mileage unknown · Apr 9, 2024
EngineStructure
Car exhaust inside the vehicle when driving at low speeds, idling, or parked into the cab of the vehicle. Only way to stop the exhaust fumes is to use the recirculate interior air. Rear hatch hydraulics are failing, hatch will not open completely and partially shuts when opened. When driving very loud squeaking from vehicle.
NHTSA ODI #11581928
Mileage unknown · Sep 29, 2023
Engine
- Leaking exhaust at bellow - I had to replace the catalytic converter. - I have a bad sense of smell. I did not notice it was an issue until a passenger of mine noted a smell of exhaust while we were driving. - I read a bulletin on your websites that there was a recall of other 2016 Subaru Outbacks for this same issue. I unde…
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- Leaking exhaust at bellow - I had to replace the catalytic converter. - I have a bad sense of smell. I did not notice it was an issue until a passenger of mine noted a smell of exhaust while we were driving. - I read a bulletin on your websites that there was a recall of other 2016 Subaru Outbacks for this same issue. I understand that my car was not a part of this recall because of the manufacturing date, but I found it to be an odd coincidence that my car has the same issue. When I visited another mechanic initially, he immediately alerted me that he has seen many Subaru vehicles with this same issue and directed me to a Subaru dealership. - My car was finally diagnosed and repaired at Marin Subaru of CA.
NHTSA ODI #11547320
Mileage unknown · Apr 25, 2023
Engine
Cam Carrier leak due to a factory design. Yes it is available for a inspection. This causes a lot of oil to leak, oil is flammable and the dealer told me there is a high risk of an engine fire due to this. Yes the dealer confirmed the problem, this is a common problem with Subaru Outbacks, there are tons of reports and complain…
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Cam Carrier leak due to a factory design. Yes it is available for a inspection. This causes a lot of oil to leak, oil is flammable and the dealer told me there is a high risk of an engine fire due to this. Yes the dealer confirmed the problem, this is a common problem with Subaru Outbacks, there are tons of reports and complains about this. The vehicle has been inspected by Subaru dealership No warnings or lamps, Subaru dealer has known about this issue with oil leaking from the cam carrier since back in 2019 when they first brought it up to me, they only wiped the leaking fluid and never proceed to complete warranty repair to fix the issue.
NHTSA ODI #11518873
Mileage unknown · Apr 24, 2023
Engine
At 59,000 miles, engine developed “heavy leak from cam carriers” by dealer service department. It was recommended that it be resealed. Engine was removed and serviced. At 112,000 miles same diagnosis was observed, along with a recommend reseal. It appears that the dealer repair was not done properly, or the repair was only t…
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At 59,000 miles, engine developed “heavy leak from cam carriers” by dealer service department. It was recommended that it be resealed. Engine was removed and serviced. At 112,000 miles same diagnosis was observed, along with a recommend reseal. It appears that the dealer repair was not done properly, or the repair was only temporary. This is a very labor intensive and expensive repair that needs to be done to avoid leaking oil that could ignite and cause engine fire. This seems to be a chronic problem and redesign of the repair and cam carriers are needed immediately. Subaru of America has offered to cover about 1/3 of the cost.
NHTSA ODI #11518726
Official recalls
4Dec 19, 2019
Subaru of America, Inc. (Subaru) is recalling certain 2016-2017 Outback vehicles. A replacement air bag control module may have been installed that is not compatible with the passenger air bag module, possibly affecting air bag deployment.
Consequence & remedy
Consequence: In the event of a crash necessitating passenger frontal air bag deployment, the air bag may not deploy properly, increasing the risk of injury.
Remedy: Subaru will notify owners, and dealers will replace the passenger air bag module, free of charge. The recall began February 3, 2020. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WUX-09.
May 11, 2016
Subaru of America, Inc. (Subaru) is recalling certain model year 2016-2017 Legacy and Outback vehicles manufactured February 29, 2016, to May 6, 2016. The steering column on the affected vehicles may have been improperly machined, and as a result, turning the steering wheel may have no effect on the direction of the wheels.
Consequence & remedy
Consequence: The loss of steering ability would increase the risk of a crash.
Remedy: Subaru will notify owners, and dealers will inspect the lot number on the steering column, replacing the steering column, as necessary, free of charge. The recall began May 13, 2016. Owners may contact Subaru customer service at 1-800-782-2783 or by visiting http://www.wtd65.service-campaign.com. Subaru's number for this recall is WTD-65. Note: Until the vehicles have been inspected, owners are advised not to drive their vehicles.
Nov 24, 2015
Subaru of America, Inc. (Subaru) is recalling certain model year 2016 Legacy vehicles manufactured October 24, 2015, to November 16, 2015, and Outback vehicles manufactured October 24, 2015, to November 17, 2015. Due to the improper tightening of the securing nuts, the drive shaft may separate from the rear differential.
Consequence & remedy
Consequence: If the drive shaft detaches from the rear differential, it may strike the fuel tank and result in a fuel leak, increasing the risk of a fire.
Remedy: Subaru has notified owners, and dealers will inspect the fastening nuts, and tighten or replace them, as necessary, free of charge. The recall began on December 10, 2015. Owners may contact Subaru customer service at 1-856-488-8500. Subaru's number for this recall is WQV-57.
Additional source detail variants (2)
Power Train:driveline:differential Unit
Subaru of America, Inc. (Subaru) is recalling certain model year 2016 Legacy vehicles manufactured October 24, 2015, to November 16, 2015, and Outback vehicles manufactured October 24, 2015, to November 17, 2015. Due to the improper tightening of the securing nuts, the drive shaft may separate from the rear differential.
Consequence: If the drive shaft detaches from the rear differential, it may strike the fuel tank and result in a fuel leak, increasing the risk of a fire.
Remedy: Subaru has notified owners, and dealers will inspect the fastening nuts, and tighten or replace them, as necessary, free of charge. The recall began on December 10, 2015. Owners may contact Subaru customer service at 1-856-488-8500. Subaru's number for this recall is WQV-57.
Power Train:driveline:driveshaft
Subaru of America, Inc. (Subaru) is recalling certain model year 2016 Legacy vehicles manufactured October 24, 2015, to November 16, 2015, and Outback vehicles manufactured October 24, 2015, to November 17, 2015. Due to the improper tightening of the securing nuts, the drive shaft may separate from the rear differential.
Consequence: If the drive shaft detaches from the rear differential, it may strike the fuel tank and result in a fuel leak, increasing the risk of a fire.
Remedy: Subaru has notified owners, and dealers will inspect the fastening nuts, and tighten or replace them, as necessary, free of charge. The recall began on December 10, 2015. Owners may contact Subaru customer service at 1-856-488-8500. Subaru's number for this recall is WQV-57.
Aug 10, 2015
Subaru of America, Inc. (Subaru) is recalling certain 2015 and 2016 model year Subaru Legacy 4-Door and Outback vehicles manufactured July 3, 2015, to July 27, 2015. Transmission oil may leak from a deformed seal cap on the propeller shaft yoke.
Consequence & remedy
Consequence: If the transmission oil leaks onto the exhaust pipe, there is a possible risk of fire.
Remedy: Subaru will notify owners, and dealers will replace the propeller shaft, free of charge. The recall began on August 28, 2015. Owners may contact 1-800-782-2783. Subaru's number for this recall is WQU-56.
Additional source detail variants (2)
Power Train:automatic Transmission
Subaru of America, Inc. (Subaru) is recalling certain 2015 and 2016 model year Subaru Legacy 4-Door and Outback vehicles manufactured July 3, 2015, to July 27, 2015. Transmission oil may leak from a deformed seal cap on the propeller shaft yoke.
Consequence: If the transmission oil leaks onto the exhaust pipe, there is a possible risk of fire.
Remedy: Subaru will notify owners, and dealers will replace the propeller shaft, free of charge. The recall began on August 28, 2015. Owners may contact 1-800-782-2783. Subaru's number for this recall is WQU-56.
Power Train:driveline:driveshaft
Subaru of America, Inc. (Subaru) is recalling certain 2015 and 2016 model year Subaru Legacy 4-Door and Outback vehicles manufactured July 3, 2015, to July 27, 2015. Transmission oil may leak from a deformed seal cap on the propeller shaft yoke.
Consequence: If the transmission oil leaks onto the exhaust pipe, there is a possible risk of fire.
Remedy: Subaru will notify owners, and dealers will replace the propeller shaft, free of charge. The recall began on August 28, 2015. Owners may contact 1-800-782-2783. Subaru's number for this recall is WQU-56.
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.
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