And to add to this, a bit.
Around 7-8 years of age, especially in hotter climates, expect to have to change the coolant output flange/pipe that is mounted under the intake manifold.
https://www.realoem.com/bmw/enUS/sho...diagId=11_4565 #12 here
Mine cracked at 143,000 miles, on a roadtrip, and spewed about half gallon of coolant per 20 minutes.
Luckily a nearby BMW dealer actually had one in stock and I replaced it myself in a parking lot quickly. It requires pulling the manifold out of the way a bit.
Ironically, I had one of those tubes at home, waiting to be replaced. Of course, I let it wait.
My sister's 2014 328d had the same thing happen.
I'd expect the 2014s to need this more and more.
Additionally, my sisters 2014 328d at around 130k had the harmonic balancer rubber give out and come off track. This is uncommon, but I see how it would happen with age.
So for cars with 7-8 years of age, I'd add those plastic and rubber parts on the list. They're not hard (*YMMV) to change, but will leave you stranded if they go out.