Battery OEM Mazda or OEM BMW

I had a battery in a 93 BMW last forever like that

The Mazda OEM battery only lasts 3 years it seems. I have a 2021 and just changed the battery for similar reasons. It still started with no issues but it was pretty weak and was immediately noticeable after installing the new one. If you can afford it, the extra money for an AGM is worth it.

Regardless, while that’s sorta old for a battery, I have OEM BMW batteries going on 12 years with 89% charge capacity.

Still running on its original battery that came with the car.

These were very very well made batteries. They also used to be insanely expensive. Now, BMW knows the game and offers a 2 year warranty, which is pretty low for batteries, but they are very competitively priced.

My 2021 45e usually gets 30-34 in mild southern US weather per charge.

The only issues my wife and I have had on our 2021 CX9 and 3GT are dead battery issues. And we had dash and reverse cams fitted, which run and film continuously. If our street is busy, they can run the battery flat within 2 days.

Battery died less than 12000 miles. Apparently Mazda is using cheap batteries, as this seems to be a common issue. But I still see others complain about the same thing.

first issue I had was the battery at around 2000 miles, it was replaced under warranty.

530e with a little over 20,000 miles shows 10 miles electric range on a nice summer day. It used to show 15 when new. BMW said that the drop was not warranty worthy.