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2019 Subaru Ascent Engine Problems

21 owner-reported engine complaints from NHTSA data

21
Complaints
1
Recalls
Jan 2020Dec 2020
Date Range

Data sourced from NHTSA public database. For informational purposes only. Always consult a qualified mechanic.

Engine Recalls (1)

RECALLCampaign #19V856000

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)

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.

Fix: 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.

Owner Complaints (21)

criticalENGINE,FORWARD COLLISION AVOIDANCE
Filed: Oct 2021

Trying to pass an 18-wheeler on PA Turnpike. Weather 68-degrees, sunny day, no precipitation. When accelerating, the vehicle began shaking.

NHTSA #: 11435678
criticalENGINE
Filed: Jul 2021

Huge plumes of smoke on startup. Complained to the service department on multiple occasions and even left the car with the dealer service department. They said they could not duplicate my complaint.

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NHTSA #: 11425761
criticalENGINE
Filed: Jun 2021

Driving from Tehachapi, CA toward Las Vegas towing our camper at about 45-50 MPH, we started hearing a knocking that sounded like valve flutter. We drove for about 1 minute looking for a safe place to pull over, but then the knocking grew louder and the oil temp started to rise, so we immediately braked and pulled into the sand (no shoulder).

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NHTSA #: 11421603
criticalENGINE,FUEL/PROPULSION SYSTEM
Filed: Mar 2021

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.

NHTSA #: 11399159
criticalENGINE
Filed: Dec 2020

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.

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NHTSA #: 11384464
mediumENGINE AND ENGINE COOLING
Filed: Feb 2026

The contact owns a 2019 Subaru Ascent. The contact stated that while the engine was idling, exhaust fumes entered the cabin of the vehicle. Additionally, immediately after starting the vehicle, there was a loud ticking sound coming from the exhaust system.

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NHTSA #: 11717497
mediumENGINE
Filed: Dec 2024

The Y pipe that connects the exhaust from the engine to the turbo charger, has cracks from poor welds. It happened 8-12 months ago we started to notice that during warm up our Ascent would sound real loud then quiet down once it warmed up. We didn’t know there was an issue as there were no lights that came on and we had no loss of power or MPG.

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NHTSA #: 11631180
mediumENGINE
Filed: Sep 2024

During an inspection at the dealership in December 2023, the tech found the oil pan to be leaking. It was resealed during the same visit. Approximately 8 months later, the same problem was found again at the dealership.

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NHTSA #: 11613695
mediumENGINE,FUEL/PROPULSION SYSTEM
Filed: Oct 2020

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 #: 11363767
mediumENGINE
Filed: Sep 2020

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

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NHTSA #: 11353711
mediumENGINE
Filed: Aug 2020

My wife and I purchased a new subaru ascent in february of last year. Since then intermittently there is a large blue/gray cloud of smoke that comes from the exhaust when the car is started. Have taken the car to the local dealer for repair 4 times and they replaced a part the first time but since then said that they are not able to replicate the problem.

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NHTSA #: 11352032
mediumENGINE
Filed: Mar 2020

Car shakes when it is not in motion. When the car is stopped on the road, or brakes are engaged the car will violently shake. When the car engine is starting the check engine like flashes.

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NHTSA #: 11315767
mediumENGINE
Filed: Jul 2019

TL* THE CONTACT OWNS A 2019 SUBARU ASCENT. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 10 MPH, THERE WAS AN ABNORMAL NOISE AND THE VEHICLE STALLED. THE VEHICLE WAS RESTARTED AND FUNCTIONED AS INTENDED. THE VEHICLE WAS TAKEN TO NAPLETON SUBARU DEALER (505 N PERRYVILLE RD, ROCKFORD, IL 61107 (877) 403-5984) ON SEVERAL OCCASIONS AND WAS DIAGNOSED THAT THE OVERHEAD UNIT NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE VEHICLE WAS ALSO TAKEN TO BE DIAGNOSED AT JAMESVILLE SUBARU DEALER (3519 RYAN RD, JANESVILLE, WI 53545 (608) 743-9595) WHERE THEY DIAGNOSED THAT THE STABILIZER BAR NEEDED LUBRICATION. IT WAS UNKNOWN IF THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS CONTACTED AND TWO CASE NUMBERS WERE OPENED UNDER 144125212915 AND 1-459841535478. THE FAILURE MILEAGE WAS 3,801.

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NHTSA #: 11240318
mediumENGINE,FUEL/PROPULSION SYSTEM
Filed: May 2019

RAW GAS SMELL WHEN VEHICLE IS AT IDLE OR AFTER BEING DRIVEN FOR A BIT AND PARKED IN THE GARAGE. THE SMELL COMES THRU THE VENTS AND FILLS THE GARAGE AFTER I PARK THE VEHICLE. GAS MILEAGE IS ALSO BEING EFFECTED IT SEEMS, AND IS LOW.

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NHTSA #: 11205006
mediumENGINE
Filed: Oct 2018

DRIVING ON FREEWAY CHECK ENGINE CAME ONLINE SUDDENLY. EYESIGHT TURNED OFF. CAR BECAME UNSTABLE, COULD NOT GO PAST 60 MPH. KIDS IN FREKING OUT. VERY UNSAFE. TOOK TO DEALERSHIP. THEY COULD NOT FIGURE OUT. I DID ONLINE RESEARCH AND FOLLOWED THESE FORUMS HTTPS://WWW.ASCENTFORUMS.COM/FORUM/137-SUBARU-ASCENT-COMPLAINTS-ISSUES-PROBLEMS/1981-CHECK-ENGINE-LIGHT-11.HTML APPARENTLY EARLY SUBARU MODELS HAD 2 BOLTS MISSING IN THE ENGINE AIRTIGHT COMPARTMENT. ATLEAST 2 OTHER PEOPLE HAVE COMPLAINED. I HAVE DRIVEN SO MANY MILES SUBARU AS NOT ISSUED A TSB AND A RECALL. I WAS PLANNING TO TAKE LEGAL ACTION AS THIS A UNSAFE THING TO DO. PLEASE PLEASE PLEASE LOOK INTO THIS. I HOPE YOU COULD ENSURE ACCOUNTABILITY AND HONESTY W/ SUBARU. I AM EXTREMELY FRUSTRATED. DID SUBARU DELIBERATELY HID THIS FROM CONSUMERS? PLEASE CHECK THIS FORUM THREAD AGAIN HTTPS://WWW.ASCENTFORUMS.COM/FORUM/137-SUBARU-ASCENT-COMPLAINTS-ISSUES-PROBLEMS/1981-CHECK-ENGINE-LIGHT-11.HTML

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NHTSA #: 11139704
lowENGINE,FUEL/PROPULSION SYSTEM
Filed: Mar 2025

My vehicle smokes when starting it. A lot of white smoke that can fill a parking lot. The smoke has a strong chemical smell.

NHTSA #: 11645828
lowENGINE
Filed: Sep 2023

Clouds of smoke at startup scince car was new.

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NHTSA #: 11542315
lowENGINE
Filed: Jul 2023

Battery draining problem

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NHTSA #: 11535244
lowENGINE,FUEL/PROPULSION SYSTEM
Filed: Jul 2022

They have not have remedy for a long time!

NHTSA #: 11475314
lowENGINE
Filed: Feb 2022

Transmission slipping especially while climbing an incline though it’s happened while on flat surface accelerating

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NHTSA #: 11450710
lowENGINE,FUEL/PROPULSION SYSTEM
Filed: Jan 2020

Fresh fuel smell from the vehicle (entering the cabin while driving and upon parking). Upon arriving home yesterday, the smell was still very strong. I went a step further and pulled the oil dipstick to check the level and to see if that's where it was originating from.

NHTSA #: 11299624

Other 2019 Subaru Ascent Issues