Let's get something clear.
Production of Altay has not been selected yet, development of Altays engine has been selected - BMC.
BMC and Rheinmetall have invested in joint venture RBSS that has participated in Altay tender. I'm sure you'll feel better on quality knowing that there's an German company involved.
On to the engine, BMC has hired 200 engineers, 70 of whome are foreign engineers and some notable individuals included in their ranks.
If anything, it seems to me like BMC would produce the best quality Altay, they have all the credentials they have all the backing.
No?