2003 Subaru Legacy Engine Problems
- Complaints
- 4about this part
- Share
- 7%of 60 total for the year
- Median mileage
- 132,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the engine of the 2003 Subaru Legacy, 7% of the 60 complaints for this model year. Where a mileage was given, the median is 132,500 miles.
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.
“The contact owns a 2003 Subaru Legacy. The contact stated that while driving 5 MPH, the contact smelled a strong gasoline odor coming from the engine compartment. The vehicle had not been taken to a dealer or an independent mechanic for diagnosis or repair. The manufacturer was made aware of the problem. The approximate failure mileage was 145,000.”
NHTSA complaint #10558992, filed 2014-01, 145,000 miles“The contact owns a 2003 Subaru Legacy. The contact stated that there was an abnormal fuel odor within the vehicle without warning. In addition, the contact observed a leak of fluid located under the front passenger side of the hood. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The contact mentioned that the odor was more stringent when the vehicle was idling. The dial for the air/heat was fractured and could not be turned off. The failure mileage was approximately 175,192.”
NHTSA complaint #11031858, filed 2017-10, 175,192 milesRelated service bulletins
- 11027982Jan 12, 2026This Bulletin provides the diagnostic procedure for the STARLINK® Remote Engine Start (RES).
- 11027083Dec 8, 2025This Service Information Bulletin provides the Service Manual Correction to the diagnostic procedure for DTC B2A16 (Immobilizer Key Collation Diagnosis).
- 11022305Aug 11, 2025Subaru Service Technical Support Newsletter special edition.
- 11017452Apr 22, 2025This Bulletin announces the diagnostic procedures to be followed when diagnosing engine oil leakage on FA and FB type engines.
- 11016224Mar 24, 2025The purpose of this bulletin is to advise of SOA’s revised Catalytic Converter Recycling Program shipping procedure.
- 11008282Sep 27, 2024This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
- 11008281Sep 26, 2024This Service Information Bulletin announces the diagnostic procedures to be followed when diagnosing engine oil leakage on FA and FB type engines.
- 11008267Sep 17, 2024This bulletin announces availability of the NEW genuine Subaru engine oil filter.
- 11006934Aug 5, 2024The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site.
- 11005608Jul 11, 2024This thermo control valve video contains information on the replacement of thermo control valve.
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 3 | 50% |
| 2024 | 1 | 6% |
| 2022 | 1 | 3% |
| 2021 | 2 | 6% |
| 2020 | 4 | 3% |
| 2019 | 6 | 5% |
| 2018 | 10 | 9% |
| 2017 | 5 | 4% |
| 2016 | 7 | 5% |
| 2015 | 23 | 14% |
| 2014 | 5 | 9% |
| 2013 | 18 | 27% |
| 2012 | 23 | 26% |
| 2011 | 22 | 13% |
| 2010 | 31 | 21% |
| 2009 | 7 | 11% |
| 2008 | 4 | 6% |
| 2007 | 7 | 21% |
| 2006 | 16 | 18% |
| 2005 | 4 | 2% |
| 2004 | 5 | 10% |
| 2003 | 4 | 7% |
| 2002 | 4 | 7% |
| 2001 | 3 | 4% |
| 2000 | 1 | 1% |
| 1999 | 2 | 2% |
| 1997 | 1 | 1% |
Other parts of the 2003 Subaru Legacy
16 complaintsEngine cooling
9 complaintsFuel system
9 complaintsTransmission and drivetrain
5 complaintsVehicle speed control
5 complaintsBrakes
4 complaintsTires
4 complaintsBody and structure
3 complaintsElectrical system
2 complaintsSuspension
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsWheels
2 complaints
← All problems reported for the 2003 Subaru Legacy
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