The Land Rover saga continues.
Install garbage engine with tons of problems.
Get reputation for poor reliability.
Refine or change engine for one that is nearly perfect.
Just before reputation is restored, switch to a new garbage engine with tons of problems…
Well, the Grenadier was supposed to be the "spiritual successor" to the Defender, and then they sourced their engine from BMW as well, so they are following the Land Rover ethos. Make a fantastic off road vehicle, install a garbage engine designed by someone else, and meet the consequences.
I wouldn't touch a BMW V8 with a 10 foot pole for the well known reasons listed by Naks. The inline 6 is supposedly better, but BMW has a habit of routing oil through alternator brackets and putting timing chains with guides that don't last on the firewall side of the motor. It's like the they literally sit around and think up new ways of creating leaks and problems while maximizing labor intensive fixes. At least Land Rover had the good sense to put the timing chain on the front of the AJV8s when they decided to make guides and chains that wouldn't last.
Not that I can afford the new Range Rover, but I wouldn't even consider the BMW V8 version if I had the means. I'll take a used 7 seater with Ingenium inline 6 whenever it depreciates enough for me to actually be able to afford it. Or electric.