NHTSA Complaint #11675441 — 2023 SUBARU OUTBACK

My 2023 Subaru Outback Wilderness experienced multiple complete failures to start over a 2-day period at 51,930 miles, creating significant safety risks and stranding situations.Component Failure: Battery system (SOA821B700, 620 CCA) failed to maintain charge when vehicle parked/off. Component replaced and available for inspection if retrieved from disposal. What Happened: Vehicle experienced repeated failure-to-start episodes over 2 consecutive days at 51,930 miles. While jump-startable, battery would not maintain charge for restart after any parking period. No warning lamps or messages preceded failures. Safety Risks: Created dangerous stranding situations in potentially unsafe locations. Loss of ability to restart in emergencies, failure of electrical systems (lights/hazards), risk of accidents when unable to restart in traffic situations. Professional Confirmation: Independent automotive shops tested battery/alternator systems confirming battery not holding charge per Subaru specifications, indicating systemic electrical drain issue. Manufacturer Inspection: Subaru dealer testing contradicted independent findings despite multiple documented failures. Customer Advocacy denied reimbursement claiming "normal wear" despite documented design deficiency. Known Defect: Failure directly relates to documented inadequacy in TSB 07-213-22R acknowledging original battery specification insufficient. TSB introduced higher-capacity replacement (SOA821B900, 750 CCA) requiring new mounting hardware, proving design correction not maintenance. TSB updated March 2024 (NHTSA #10252553) expanding to 2024 models, demonstrating ongoing systematic problem across multiple model years (2020-2024). Warning Signs: No warning indicators preceded failures - complete unexpected loss of starting ability creating immediate safety hazard.