I'm currently debating between getting the x5 M50i or the X3M. As i plan to drive the car for 10-15 years, reliability is a concern for me. The X3M is based on the B58 engine which is said to be one of Bmw's more reliable engines. It has also served me well in my F30.
However, upon digging more into the N63 engine, it appears to have numerous problems regarding oil consumption, and problems that manifest with extra heat due to the hot Vee engine. A lot of people say that these issues plagued the earlier engines, but have been fixed with the TU3 variant of the n63.
https://bimmerlife.com/2019/06/01/up...ption-lawsuit/
https://thelemonfirm.com/2019/12/03/...ed-n63-engine/
both those articles say that while the issue is present in past iterations of the engine, bmw has yet to fix the problem, and new lawsuits are being filed because of this issue.
Are there any aftermarket solutions to solve this heat issue? While i'm not expecting toyota reliability from this car, I expect it not to require thousands a year to keep running.
As of now I'm leaning towards the X3M unless anyone can convince me for the M50i.