Hyundai/Kia - slapped down by EPA for lying about their EPA numbers
Ford - ditto
Volkswagen - has a problem with imploding fuel pumps that damage engines ($7000 repair). Blames customer and voids warranty! Under investigation by US government.
Toyota - had a problem with oil gelling engines ($7000 repair). Blames customer and voids warranty! Eventually was forced by State governments to reinstate the warranty or face massive fine. (And was fined by the Obama administration.)
GM - numerous recalls, changing parts but not changing part numbers, coverups, etc.
But GM also punished whistleblowers. A man named Courtland Kelley was a quality engineer who noticed gasoline leaks in fuel refilling pipes, so GM told him to "shutup" and transferred him to the corporate equivalent of Siberia. "Kelley’s fate has taught other GM employees to be less vocal about their concerns—and specifically influenced a GM safety inspector for the Cobalt named Steven Oakley. Oakley is quoted in the Valukas Report as having been too afraid to insist on safety concerns with the Cobalt after seeing his predecessor 'pushed out of the job for doing just that.'"
http://gmauthority.com/blog/2014/06/...-safety-flaws/
IMHO anyone who trusts (or defends) a car corporation is foolish. They have a long & documented history of dishonesty, deception, and screwing their customers (voiding warranties, covering-up mistakes, et cetera). They are no more trustworthy than a used car salesman or ebay seller.