2020 Subaru Legacy electrical system problems

15 owner complaints filed with NHTSA name the electrical system on the 2020 Subaru Legacy — 12% of all complaints for this model year.

Electrical System complaints

12%

share of all complaints

—

median reported incident mileage

0 / 1

crash / fire reports

What owners report

“While driving there is a loss of power, the battery fails, electronic components shut down and car stops. Has happened intermittently. Replaced battery. This is a significant safety issue happened on freeway near exit ramp, in parking lot in driveway, everything cuts out. Opened hood and seems to…”
filed Jun 20, 2026
“One hour into traveling on the highway smoke began to come from under the hood so we pulled off to the side of the road. Upon opening the hood, after the smoke cleared, a fire was observed. At that point the passengers exited the vehicle and called 911. There was no warning lights or sounds…”
filed Jul 16, 2025

Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.

This bulletin announces the design change made to the high-pressure fuel pump developed to prevent DTC P0087 (Fuel Rail/System Pressure – Too Low Bank 1). (This is an revised version of the original bulletin.)
09-123-24R · Service Bulletin/Repair Instructions · issued Jul 28, 2026
This bulletin provides new diagnostic steps for DTC P0851 and P0852 to be used in conjunction with the applicable Service Manual.
16-159-26 · Service Bulletin/Repair Instructions · issued Jul 23, 2026
This Service Information Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs on the vehicles listed. (This is an revised version of the original bulletin.)
15-246-19R · Service Bulletin/Repair Instructions · issued Jun 30, 2026
This bulletin provides new diagnostic steps for DTC P0851 and P0852 to be used in conjunction with the applicable Service Manual.
16-159-26 · Service Bulletin/Repair Instructions · issued Jun 23, 2026