Cadillac, people here with experiences?

Hello, I’ve been driving a Mercedes W169 in ’05 (“Rentnerkarre”, am actually satisfied if not constantly something would break. Slowly the constant repairs go on my clock, I stand at something over 20tkm a year about 2-3 times in the workshop. Actually I thought for a long time again about something European (Mercedes, BMW and Volvo) or what from Asia (Mazda) until I accidentally stumbled over Cadillac. I can’t get the vehicles out of my head! The longer the are there people here who can tell me something about the Cadillac CTS with the 2.0T or the CT6 (both from year of construction 2016)? Distinctiveness, defects, maintenance costs, spare parts costs? There is nowhere else to be found about these four areas except that the AT transmission does not switch “European” and the CUE system does not reach the iDrive…. I know Cadillac are exotics with very few new registrations a year but one finds yes really garnix about these two models, except many test reports. Maybe also a good sign? Thanks already for your answers! Gruss Haemiker