2004 Subaru Legacy problems & reliability
49 owner complaints filed with NHTSA for the 2004 Subaru Legacy, alongside 10 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
3 complaints report injuries (3 injured).
Federal crash records (FARS 2020–2023): 2004 Subaru Legacy vehicles were involved in 29 fatal crashes with 22 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Air Bags → | 26 | 53% |
| Engine | 5 | 10% |
| Vehicle Speed Control | 5 | 10% |
| Fuel/propulsion System | 4 | 8% |
| Engine and Engine Cooling | 2 | 4% |
| Power Train | 2 | 4% |
| Service Brakes, Hydraulic | 2 | 4% |
| Electrical System | 1 | 2% |
| Fuel System, Other | 1 | 2% |
| Seat Belts | 1 | 2% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
All 16 reported components →Mileage when problems occurred
Among the 25 complaints that included a usable odometer reading, the median reported incident mileage was 85,000 miles (middle 50% between 21,300 and 133,798 miles).
Complaints by incident year
What owners report
“AT 26,469 miles the harmonic balancer separated into two pieces while driving causing sudden loss of power steering. I contacted Subaru for assistance with this know problem. They refused a free repair. I have been a Master ASE mechanic for over 25 years at a dealership and know repairs of this type are usually done…”
Engine · filed Jun 1, 2023
“A smell of gas was present in the passenger area. I took it to my mechanic. He said the Damper Fuel Assembly (Part # 42086AE040) was leaking. It is a high pressure gas hose. Subaru no longer makes the part, making the car valueless. We tried junkyards, etc, but that part seems to be leaking on all. It is dangerous. I…”
Fuel/propulsion System · filed Feb 3, 2023
“I keep receiving safety recall letters about the airbag in this vehicle. This vehicle has been scrapped since july 2017. I could no longer get it to pass emissions. I have since then called the number on the letters several times to remove me from the notice list but I keep receiving them. I recently noticed that…”
Air Bags · filed Aug 21, 2020
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Air Bag Inflator Rupture
Engineering Analysis EA15001 · opened Feb 24, 2015 · open · led to recall 22V945
- Air Bag Inflator Rupture
Preliminary Evaluation PE14016 · opened Jun 11, 2014 · closed Mar 2, 2015 · led to recall 15V226000
Technical service bulletins
193 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2004 Subaru Legacy. The 10 most recent:
This announcement is requesting retailer staff to retain the EyeSight protective hood covers from Generation 4 EyeSight cameras.
SubaruNet Annoucement (E · Other · issued Jun 12, 2026
This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
01-167-08R · Service Bulletin/Repair Instructions · issued May 18, 2026
This announcement provides information on the remanufactured CVT transmission program.
SubaruNet Announcement (R · Other · issued May 4, 2026
This Service Information Bulletin was developed to provide interim guidance for vehicles exhibiting DTC B2A20.
07-240-26R · Service Bulletin/Repair Instructions · issued Apr 30, 2026
This bulletin announces the service manual correction regarding clutch master cylinder reservoir service procedures.
03-97-26 · Service Bulletin/Repair Instructions · issued Apr 24, 2026
This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
01-167-08R · Service Bulletin/Repair Instructions · issued Apr 24, 2026
This Bulletin provides the diagnostic procedures to be followed when addressing customer concerns of steering wheel/vehicle body vibration when driving at highway speeds when tire/wheel balance is suspected.
05-97-26 · Service Bulletin/Repair Instructions · issued Apr 20, 2026
This bulletin announces the new procedure and Warranty Fail Code for FirstTime air conditioning (A/C) performance concerns possibly resulting from an undetected A/C refrigerant leak.
10-105-25R · Service Bulletin/Repair Instructions · issued Mar 26, 2026
This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
01-167-08R · Service Bulletin/Repair Instructions · issued Mar 26, 2026
This bulletin contains information to help when attempting to complete the STARLINK Telematics subscription process, an Error Code 202 and / or 204 may occur preventing the process from completing successfully
15-219-18R · Service Bulletin/Repair Instructions · issued Mar 16, 2026
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2004 Subaru Legacy has 10 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2004 Subaru Legacy?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Among complaints with usable mileage, the median reported incident mileage was 85,000 miles. This does not predict when a particular vehicle will develop a problem.