Don't forget to check if the pano roof is fully operational.

If it doesn't look like it was recently replaced, I would change the coolant expansion tank to avoid that from failing. I got a Berh tank for about $60. Other than that, I would replace the transfer case and transmission fluid.

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e70 - purchased 6/2018
e36 - wouldn't pass smog at 190k 2016
e53 - transmission blew at 225k 2012
e30 - sold as it was a little slow for a DD and burning oil at 220k 2011