I have seen them usually last more than 5 years, its mostly because of the massive size.

Good thing the germans thought it through - They need their cars starting in siberian winters.

At the other end of the spectrum look at Honda Fit batteries, they are literally lawn mower batteries.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)