I don't know what the reliability stats overall are for BMW or the X5, but my personal experience is much better than on any of the boards, and I have had a few BMWs over the years. Not Lexus reliability, but certainly fine and low hassle for me.

To the OP's question, there are all of the true British cars (what, Morgan? - are there any others that aren't part of some other car company?) and Alfa is coming back to the USA with what I certainly hope will be better reliability than when they left (Fiat did it).