What car brands would you own? Serious question.
Good question, and it's a hard problem, because, as you note, most automakers have done some questionable things at some point in their history. Some deliberate, some less so. I'm running into this problem in more and more places, and at some point will probably just end up maintaining the stuff I have indefinitely. A bunch of it's ancient anyway by most people's standards. As long as I can get parts...
However, I'll generally bias more against recent misbehavior. Ford's behavior in the 1970s has less impact on my decisions today than bizarre one-off QC failures and repair-hostile activities (yes, I know Ford screwed up roof glue, I expect they'll be a good bit more careful in years ahead about that sort of stuff).
I can say I currently have a Ford (1997 F350 CCLB diesel), a Chevy (2012 Volt), a Willys (1930 8-80D), two Urals (Russian sidecar bikes), and a Buell (2002 Blast). Plus a tractor (Ford 9N, ~1940 build date).
I object to repair-hostile vehicles (Tesla is a flagship here, John Deere's recent stuff also qualifies and I won't own that), and I object to "big data" style behavioral aggregation, so basically anything with an active cell modem needs to be nerfed before I'll consider it. I've not pulled the Volt's modem because it talks to towers that no longer exist, and Onstar is pre-collect-and-aggregate-all-the-surpluses-to-sell that most modern vehicles are taking advantage of. The new Roxor looks nice, just isn't street legal...
I hope to not have to worry about it for a long while at this point, but I don't mind Chevy's offerings in the EV space, once they replace the batteries in all the Bolts. I still prefer PHEVs, so if something happened that required replacing our Volt, I'd probably get a Gen 2 and pull the cell modem out of it. Otherwise, I just haven't been keeping close track. The Urals are... I mean, they're a Russian bike, based on a 1939 BMW, and they have a sidecar. They're ill behaved, cantankerous pains in the ass, but are mostly mechanical and straightforward.
VW knowingly cheated and broke a whole slew of laws with their emissions software.
VW played an interesting game, and I'm honestly not sure I object. It was a discussion that was worth having, certainly - is fuel consumption and CO2 emissions more or less important than NOx emissions, or should it be location based? NOx out in the middle of nowhere isn't (IMO) that big a deal if you trade off slightly higher NOx for significantly improved fuel burn, which they did.
Seems most car companies have done excessively crappy things (often to the level of criminality) every couple decades. Money and corruption…
Pretty much. Pick something you can maintain for the long haul and try not to replace vehicles often, I suppose.