2025 Subaru Ascent Engine Problems
- Complaints
- 2about this part
- Share
- 13%of 15 total for the year
- Median mileage
- —not reported
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 2 complaints about the engine of the 2025 Subaru Ascent, 13% of the 15 complaints for this model year. 1 of these say a crash was involved and 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I hit a deer on CA 395 north, my braking system worked and my air bags deployed, and then my engine immediately caught fire. I’m lucky i was able to get out of the car through a back door. Every police and fire who responded said they have never seen a car catch fire after hitting a deer and i should report a vehicle malfunction”
NHTSA complaint #11706345, filed 2025-12“31 May 2026 (AM) Operating vehicle north on MD Rte 147 traveling appr. 45 MPH when vehicle started experiencing uncontrolled electrical activation of features e.g., heat, air, radio, main display. This proceed a shuddering in the drive train like one would experience with a transmission issue. Then, without warning, while at full speed, there was a complete loss of engine power i.e., it turned off, which also resulted in loss of steering and breaking resulting in a complete loss of control of the vehicle. …”
NHTSA complaint #11741773, filed 2026-06Related service bulletins
- 11037946Sep 29, 2026This Bulletin provides a diagnostic procedure for customer concerns about hesitation, reduced acceleration, or lack of power when driving uphill or under heavy engine load.
- 11036811Aug 20, 2026This service bulletin outlines the diagnostic and repair procedure for white smoke emitted from the exhaust after startup. This is an revised version of the original bulletin.
- 11034269Jun 30, 2026This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components…
- 11034264Jun 26, 2026This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components…
- 11034257Jun 23, 2026This bulletin outlines the diagnostic and repair procedure for white smoke emitted from the exhaust after startup.
- 11034237Jun 1, 2026"This bulletin provides a new diagnostic procedure for vehicles equipped with a Denso CP 1, 1.5 and 2.5 head units to provide an enhanced version of the troubleshooting steps for…
- 11033051May 1, 2026This bulletin announces the diagnostic procedures to be used when DTCs B1571(REFERENCE CODE INCOMPATIBILITY IMMOBILIZER CM TO ECM) and B1572(IMM CIRCUIT EXCEPT ANTENNA CIRCUIT)…
- 11027982Jan 12, 2026This Bulletin provides the diagnostic procedure for the STARLINK® Remote Engine Start (RES).
- 11027090Dec 12, 2025This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components…
- 11027083Dec 8, 2025This Service Information Bulletin provides the Service Manual Correction to the diagnostic procedure for DTC B2A16 (Immobilizer Key Collation Diagnosis).
Engine: other model years
Other parts of the 2025 Subaru Ascent
4 complaintsElectrical system
2 complaintsOther or unknown
2 complaintsSteering
2 complaintsBody and structure
2 complaintsAir bags
1 complaintsBrakes
1 complaintsForward collision avoidance
1 complaintsLane departure
1 complaintsTires
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2025 Subaru Ascent
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology