Battery OEM Mazda or OEM Subaru

My dealer replaced the battery, updated the firmware and did a parasitic drain test.

So we bought a new 550CCA battery and installed it and it started right up. When I pulled the 18 month old OEM battery out, I was shocked at the CCA rating: 356. 356!!!! That's insane.

Subaru has had a problem with their electrical systems since 2014. Batteries last 2 years, max. 2018 legacy is on its third battery in 4 years. 13,000 miles. $600.00 in batteries.

Subaru batteries aren't great in the cold either

My battery made for Subaru died on my 2017 Forester 2 weeks before the warranty ran out. SUBARU has their own problems with their batteries.

Subaru batteries suck

So far have not had any issues except for dud OEM battery, kriginal and warranty...