Funny when you see BMW owners talk about reliability...look at the stuff that goes wrong with an N54 in <100,000 miles - HPFP, turbos, fuel injectors, water pump & thermostat housing, valve cover gasket (and/or cracked cover), oil filter housing gasket, rear main seal, oil pan, etc.
With that said, I prefer GM over FCA for reliability...the new Cadillac XT5 is nice