Quote:
Originally Posted by EJR8402
I know I’m bumping an old thread here.
Just wanted to mention that I’m almost to 5 years on my original battery. Voltage looks good so far.
I am wondering if having the battery location in the trunk reduces heat, thus increasing longevity.
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It could but I had a 2012 135i (purchased new) that had the battery in the trunk, in the spare tire location. It lasted barely 5 years before it had to be replaced.