NHTSA owner reports · September 18, 2026 snapshot.
Engine complaints
47 reportsClear category filterMileage unknown · Jun 21, 2021
EnginePower Train
On Friday, June 28th, we were driving the Ascent, towing our 4100 lb. camper from Tehachapi, CA, headed north toward Las Vegas. When we stopped for gas in Tehachapi, we checked all fluids including the oil. Then at about 86 miles outside of Las Vegas coming up a steep grade in hot conditions, we hear a noise that sounded like it…
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On Friday, June 28th, we were driving the Ascent, towing our 4100 lb. camper from Tehachapi, CA, headed north toward Las Vegas. When we stopped for gas in Tehachapi, we checked all fluids including the oil. Then at about 86 miles outside of Las Vegas coming up a steep grade in hot conditions, we hear a noise that sounded like it could be valve flutter. We drove for another minute (there was no shoulder), and noted that no warning lights were on. Then we heard a louder knocking sound and saw the oil temp indicator start moving quickly to hot, and immediately pulled off onto the shoulder. After our tow to the Las Vegas Subaru dealer, it became apparent that the battery was also dead (this was the second battery replaced under warranty, and we have had to jump both batteries at least monthly over the last 2 years). Last Monday, June 14, Subaru notified us by phone on a recorded line that the investigation had concluded. They determined towing excessive weight to be the cause of the engine failure (thrown rod). We verified the make and model and registration of our camper with Subaru, which at a dry weight of 4134 pounds, is 100 lbs. less than the Airstream used in Subaru's promotional materials. We disclosed to Subaru that the camper has few miles on it and we tow with empty tanks and less than 100 pounds of cargo (2 adults and one toddler). We also told them that on our two prior trips towing, the transmission has revved frequently and it sounds like it can't find the right gear. Subaru has not provided us a copy of either inspection report, and we have been without the vehicle for nearly a month. We are asking Subaru to repair the engine under warranty (39k miles). This sudden failure put our family's safety at risk. We were forced to stop the car in the middle of a high-speed highway without safely moving to an exit- we waited in excessive heat, barely off the road in deep sand without a shoulder for an hour- we were almost hit by a semi truck as we braked.
NHTSA ODI #11421600
Mileage unknown · Jun 5, 2021
EngineFuel/propulsion SystemUnknown Or Other
Unknown. Electrical failures including eyesight, the dealers lie about the work they do, the latest was recent - they said sludge was everywhere which causes the timing to be off and said the entire engine needed to be replaced but refused to do so. I do not trust they were honest about the spot welds, as my VIN and contract wer…
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Unknown. Electrical failures including eyesight, the dealers lie about the work they do, the latest was recent - they said sludge was everywhere which causes the timing to be off and said the entire engine needed to be replaced but refused to do so. I do not trust they were honest about the spot welds, as my VIN and contract were mysteriously changed after I took delivery. Battery dies, amp dies, head unit stops functioning for months at a time. Eyesight slams on brakes at last minute. I am told it’s normal to shut up and leave. For example the last time I took it in less than 30 days ago they said they changed the filters as well. They did not. According to them they owe me a new engine. I have Starlink and documents oil is changed by Subaru yet they claimed they had no record, and it is my fault so I need to replace engine.
NHTSA ODI #11419729
27,319 miles · May 10, 2021
EngineUnknown Or OtherVisibility/wiper
ALL WARNING LIGHTS CAME ON LAST WEEK MAY 5TH 2021 WHILE I WAS DRIVINGTHECARHONE AFTER DROPPING MY DAUGHTERTOSCHOOL. I PULLED OVER AND CALLED THE DEALERSHIP AND WAS ADVISE TO TAKE THE CAR IN. AS I DROVE THE ENGINE STARTED TO LAG AND ICOULDNOTDRIVE MORE THAN 45MILES. TOOK THE CAR TO THE DEALERSHIP AND FOUND OUT THE TRANSMISSION WA…
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ALL WARNING LIGHTS CAME ON LAST WEEK MAY 5TH 2021 WHILE I WAS DRIVINGTHECARHONE AFTER DROPPING MY DAUGHTERTOSCHOOL. I PULLED OVER AND CALLED THE DEALERSHIP AND WAS ADVISE TO TAKE THE CAR IN. AS I DROVE THE ENGINE STARTED TO LAG AND ICOULDNOTDRIVE MORE THAN 45MILES. TOOK THE CAR TO THE DEALERSHIP AND FOUND OUT THE TRANSMISSION WAS BAD. THIS CAR IS 2 1/2 YEARS OLD AND I'VE HAD SO MANY PROBLEMS WITH IT. WHEN THE CVT WAS REPLACED THE CAR NEVER RUN THE SAME, I'VE TAKEN IT TO THE DEALERSHIP SEVERAL TIMES AND LET THEM KNOW THAT THERE IS SOMETHING WRONG WITH THE CAR. IT LAGS AND HESITATE DURIBG ACCELERATION. UNFORTUNATELY THEY COULD NOT REPLICATE THE ISSUE AND THAT IT WAS NORMAL. THEN THIS HAPPEN. I HAVE REPORTED THE ISSUE TO SUBARU OF AMERICA.
NHTSA ODI #11415842
10 miles · Mar 4, 2021
EngineFuel/propulsion System
DARK GRAY-BLUE SMOKE FROM THE EXHAUST ON START-UP, LASTING FOR SEVERAL MINUTES. LARGE PLUMES WITH STRONG NOXIOUS ODOR. SMOKE AND FUMES HAVE TRIGGERED SEVERAL SEVERE ASTHMA ATTACKS. NOTED ON MOST DAYS, SINCE VEHICLE WAS PURCHASED NEW IN APRIL 2019. FUEL EFFICIENCY IS FAR LOWER THAN THE 21-27 MPG CLAIMED BY SUBARU. ACTUAL AV…
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DARK GRAY-BLUE SMOKE FROM THE EXHAUST ON START-UP, LASTING FOR SEVERAL MINUTES. LARGE PLUMES WITH STRONG NOXIOUS ODOR. SMOKE AND FUMES HAVE TRIGGERED SEVERAL SEVERE ASTHMA ATTACKS. NOTED ON MOST DAYS, SINCE VEHICLE WAS PURCHASED NEW IN APRIL 2019. FUEL EFFICIENCY IS FAR LOWER THAN THE 21-27 MPG CLAIMED BY SUBARU. ACTUAL AVERAGE IS 14 MPG.
NHTSA ODI #11399159
19,567 miles · Feb 15, 2021
Electrical SystemEnginePower Train
SEVERAL TIMES OUR 2019 SUBARU ASCENT BATTERY HAS DRAINED DOWN TO LOW LEVELS REQUIRING JUMP STARTS. THIS LAST TIME WAS THIS WINTER AND -15 DEGREES OUTSIDE AND WAS VERY DANGEROUS FOR HER. THE ALTERNATOR DOES NOT SEEM ABLE TO KEEP UP WITH THE LOAD. I HAVE HEARD OF MANY OTHER PEOPLE HAVING THIS PROBLEM. IT SAT OVERNIGHT ON BOTH OCCA…
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SEVERAL TIMES OUR 2019 SUBARU ASCENT BATTERY HAS DRAINED DOWN TO LOW LEVELS REQUIRING JUMP STARTS. THIS LAST TIME WAS THIS WINTER AND -15 DEGREES OUTSIDE AND WAS VERY DANGEROUS FOR HER. THE ALTERNATOR DOES NOT SEEM ABLE TO KEEP UP WITH THE LOAD. I HAVE HEARD OF MANY OTHER PEOPLE HAVING THIS PROBLEM. IT SAT OVERNIGHT ON BOTH OCCASIONS.
NHTSA ODI #11396263
Mileage unknown · Jan 12, 2021
Electrical SystemEnginePower Train
CAR JUST DOESNT START AND NEEDS TO BE JUMPED RANDOMLY, YET DEALERSHIP SERVICE DEPT COULD FIND NO PROBELMS. ALSO WIERD LAGS, NOISES OCCURING WHILE DRIVING. THIS CAR IS TOO NEW AND HAS 18,000 MILES ON IT, SHOULDNT BE HAVING THESE TYPES OF PROBLEMS. HAPPENED NUMEROUS TIMES SINCE PURCHASE 2019 AND 2020, MOST RECENT JAN 2021 BROUGHT…
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CAR JUST DOESNT START AND NEEDS TO BE JUMPED RANDOMLY, YET DEALERSHIP SERVICE DEPT COULD FIND NO PROBELMS. ALSO WIERD LAGS, NOISES OCCURING WHILE DRIVING. THIS CAR IS TOO NEW AND HAS 18,000 MILES ON IT, SHOULDNT BE HAVING THESE TYPES OF PROBLEMS. HAPPENED NUMEROUS TIMES SINCE PURCHASE 2019 AND 2020, MOST RECENT JAN 2021 BROUGHT INTO DEALERSHIP SERVICE LARRY MILLER SUBARU BOSIE ID.
NHTSA ODI #11387725
22,000 miles · Dec 21, 2020
Engine
THE ENGINE KEEPS STUTTERING WHEN DRIVING AND SLOWING DOWN TO STOP AT A TRAFFIC LIGHT. COUPLE OF TIMES, IT SHOULD SHUT DOWN AND I HAVE TO RESTART THE CAR. I DO ENSURE THE CAR IS WARMED UP TO A MINIMUM OF 7-10 MINUTES BEFORE STARTING. IT ONLY STARTED RECENTLY BUT I AM WORRIED THAT THIS WILL HAPPEN MORE AND SUDDENLY STOP WHEN DRIVI…
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THE ENGINE KEEPS STUTTERING WHEN DRIVING AND SLOWING DOWN TO STOP AT A TRAFFIC LIGHT. COUPLE OF TIMES, IT SHOULD SHUT DOWN AND I HAVE TO RESTART THE CAR. I DO ENSURE THE CAR IS WARMED UP TO A MINIMUM OF 7-10 MINUTES BEFORE STARTING. IT ONLY STARTED RECENTLY BUT I AM WORRIED THAT THIS WILL HAPPEN MORE AND SUDDENLY STOP WHEN DRIVING AND ME GETTING INVOLVED IN AN ACCIDENT.
NHTSA ODI #11384464
17,600 miles · Dec 13, 2020
Electrical SystemEngineExterior Lighting
AT ONLY 17.6K MILES, THE BATTERY IN MY 2019 SUBARU ASCENT WAS COMPLETELY DRAINED OVERNIGHT, FOR NO LOGICAL REASON. I CALLED SUBARU ROADSIDE ASSISTANCE TO GIVE ME A JUMP AND I LET IT RUN FOR 33 MINUTES THEN TOOK IT FOR A 10 MIN DRIVE. THE BATTERY WAS DEAD AGAIN THE NEXT MORNING. VEHICLE WAS STATIONARY OVERNIGHT AND UNTIL THE 10 M…
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AT ONLY 17.6K MILES, THE BATTERY IN MY 2019 SUBARU ASCENT WAS COMPLETELY DRAINED OVERNIGHT, FOR NO LOGICAL REASON. I CALLED SUBARU ROADSIDE ASSISTANCE TO GIVE ME A JUMP AND I LET IT RUN FOR 33 MINUTES THEN TOOK IT FOR A 10 MIN DRIVE. THE BATTERY WAS DEAD AGAIN THE NEXT MORNING. VEHICLE WAS STATIONARY OVERNIGHT AND UNTIL THE 10 MIN DRIVE. DURING THIS TIME THE TAILGATE WOULD PERSISTENTLY BEEP, TRYING TO OPEN.
NHTSA ODI #11383243
23,314 miles · Oct 11, 2020
EngineFuel/propulsion System
MY FUEL PUMP WAS REPLACED (ACCORDING TO THE DEALER) BASED ON THE MOST RECENT RECALL. HOWEVER NOW IT IDLES AND RUNS ROUGH JUST A SHORT TIME AFTER THIS SERVICE. I RECENTLY READ THERE IS ANOTHER LAWSUIT OR ISSUE WITH THIS FUEL PUMP AND THE SYMPTOMS ARE THE SAME.
NHTSA ODI #11363767
12,000 miles · Sep 8, 2020
Engine
VEHICLE BLOWS OUT WHITE SMOKE UPON START UP, THIS IS A HIT AND MISS PROBLEM. THIS IS AFTER THE VEHICLE HAS BEEN PARKED OVER NIGHT, BUT HAS OCCURRED AFTER PARKED FOR A COUPLE OF HOURS, IT HAS BEEN SENT TO THE DEALER SEVERAL TIMES
NHTSA ODI #11353711
Official recalls
9Jul 7, 2026
Subaru of America, Inc. (Subaru) is recalling certain 2026 Crosstrek Hybrid, 2025-2026 Forester Hybrid, Forester, and 2019-2026 Ascent vehicles. These vehicles were manufactured with an incorrect Gross Axle Weight Rating (GAWR) on the certification label. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) 110, "Tire selection and rims."
Consequence & remedy
Consequence: An incorrect GAWR label may lead to an overloaded vehicle, increasing the risk of a crash.
Remedy: Subaru will mail a new certification label to owners, free of charge. Owners may also choose to have a dealer install the new label, free of charge. Letters informing owners of the safety risk were mailed August 27, 2026. Additional letters will be mailed once the remedy is available. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WRH-26.
Dec 8, 2022
Subaru of America, Inc. (Subaru) is recalling certain 2019-2022 Ascent vehicles. The ground bolt that secures the ground terminal of the Positive Temperature Coefficient (PTC) heater may have been improperly fastened, which could result in melting of the ground terminal and surrounding components.
Consequence & remedy
Consequence: A melting ground terminal increases the risk of a fire.
Remedy: Owners are advised to park their vehicle away from structures and to avoid leaving the vehicle unattended while the engine is running. An owner who notices or smells smoke coming from the dash or driver's footwell area should immediately stop operating the vehicle and turn the ignition switch to the "Off" position. Dealers will replace the PTC heater ground bolts and if necessary, replace the ground wire and the connector holder, free of charge. Owner notification letters are expected to be mailed February 6, 2023. Owners may contact Subaru's customer service at 1-844-373-6614. Subaru's number for this recall is WRL-22.
Dec 9, 2021
Subaru of America, Inc. (Subaru) is recalling certain 2019-2020 Ascent, 2020 Legacy and Outback vehicles. A programming error in the Transmission Control Unit (TCU) may allow the clutch to engage before the drive chain is completely clamped.
Consequence & remedy
Consequence: An improperly secured drive chain may slip and break, causing a loss of drive power and increasing the risk of a crash.
Remedy: Dealers will reprogram the TCU, inspect TCU data for chain slip, and visually inspect the chain guide. If evidence of chain slippage or damage is found, the transmission will be replaced. Repairs will be performed free of charge. Owner notification letters were mailed August 19, 2022. This recall includes all vehicles previously recalled under 19V-855. Vehicles previously recalled under 19V-855 will need to have the new remedy performed for this recall once available. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WRK-21.
Additional source detail variants (2)
Power Train:driveline:chain/belt
Subaru of America, Inc. (Subaru) is recalling certain 2019-2020 Ascent, 2020 Legacy and Outback vehicles. A programming error in the Transmission Control Unit (TCU) may allow the clutch to engage before the drive chain is completely clamped.
Consequence: An improperly secured drive chain may slip and break, causing a loss of drive power and increasing the risk of a crash.
Remedy: Dealers will reprogram the TCU, inspect TCU data for chain slip, and visually inspect the chain guide. If evidence of chain slippage or damage is found, the transmission will be replaced. Repairs will be performed free of charge. Owner notification letters were mailed August 19, 2022. This recall includes all vehicles previously recalled under 19V-855. Vehicles previously recalled under 19V-855 will need to have the new remedy performed for this recall once available. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WRK-21.
Power Train:automatic Transmission:control Module (tcm/pcm/tecm)
Subaru of America, Inc. (Subaru) is recalling certain 2019-2020 Ascent, 2020 Legacy and Outback vehicles. A programming error in the Transmission Control Unit (TCU) may allow the clutch to engage before the drive chain is completely clamped.
Consequence: An improperly secured drive chain may slip and break, causing a loss of drive power and increasing the risk of a crash.
Remedy: Dealers will reprogram the TCU, inspect TCU data for chain slip, and visually inspect the chain guide. If evidence of chain slippage or damage is found, the transmission will be replaced. Repairs will be performed free of charge. Owner notification letters were mailed August 19, 2022. This recall includes all vehicles previously recalled under 19V-855. Vehicles previously recalled under 19V-855 will need to have the new remedy performed for this recall once available. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WRK-21.
Jul 29, 2021
Subaru of America, Inc. (Subaru) is recalling certain 2019-2020 Ascent, 2018 Forester, 2018-2020 Impreza, Legacy, Outback, 2018-2019 BRZ, WRX, and Toyota 86 vehicles. The low-pressure fuel pump inside the fuel tank may fail.
Consequence & remedy
Consequence: Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.
Remedy: Dealers will replace the low-pressure fuel pump, free of charge. Owner notification letters were mailed September 24, 2021. Subaru and Toyota owners may call customer service at 1-844-373-6614. Subaru's number for this recall is WRG-21.
Apr 16, 2020
Subaru of America, Inc. (Subaru) is recalling certain 2019 Impreza, Outback, Legacy, and Ascent vehicles. The low pressure fuel pump may become inoperative.
Consequence & remedy
Consequence: If the low pressure fuel pump fails, the engine may stall without the ability to restart the vehicle, increasing the risk of a crash.
Remedy: Subaru will notify owners, and dealers will replace the low pressure fuel pump, free of charge. The recall began June 4, 2020. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WRD-20.
Dec 2, 2019
Subaru of America, Inc. (Subaru) is recalling certain 2019 Ascent vehicles. The transmission hydraulic sensor may inaccurately measure the hydraulic fluid pressure.
Consequence & remedy
Consequence: If the fluid pressure is measured higher than its actual value, the hydraulic pressure will be reduced. If this occurs, the transmission drive chain may not have the proper tension, resulting in a loss of drive power and an increased risk of a crash.
Remedy: Subaru will notify owners, and dealers will reprogram the transmission control unit. The hydraulic sensor harness will be replaced on vehicles with certain stored diagnostic trouble codes. In addition, any vehicle confirmed to have experienced low drive chain tension will have the transmission assembly will be replaced. All repairs will be free of charge. The recall began January 31, 2020. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WUV-07.
Dec 2, 2019
Subaru of America, Inc. (Subaru) is recalling certain 2019 Crosstrek, Forester, and Ascent vehicles. The aluminum Positive Crankcase Ventilation (PCV) valve can separate, allowing the separated components to enter the engine, resulting in a loss of power while driving.
Consequence & remedy
Consequence: An unexpected loss of power while driving can increase the risk of a crash.
Remedy: Subaru will notify owners, and dealers will inspect and replace the PCV valve, free of charge. If the PCV valve has separated and the components cannot be found, the short block engine will be replaced, free of charge. The recall began January 31, 2020. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WUW-08.
Jul 10, 2019
Subaru of America, Inc. (Subaru) is recalling certain 2019 Ascent vehicles. The center support bolts for the driveshaft may loosen, possibly resulting in the front portion of the driveshaft disconnecting.
Consequence & remedy
Consequence: If the front end of the driveshaft separates, it can increase the risk of a crash.
Remedy: Subaru will notify owners, and dealers will replace the driveshaft assembly, including the center support brace, free of charge. The recall began July 26, 2019. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WUI-94.
Aug 2, 2018
Subaru of America, Inc. (Subaru) is recalling certain 2019 Subaru Ascent vehicles. These vehicles may be missing spot welds on, or around, the B-Pillar, compromising vehicle strength.
Consequence & remedy
Consequence: In the event of a crash, the missing spot welds may compromise the vehicle's strength, increasing the risk of injury.
Remedy: Subaru will notify owners, and dealers will inspect the vehicle to check for missing spot welds. If the welds are missing, the vehicle will be replaced, free of charge. The recall began July 31, 2018. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WTU-80.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗