Wasn't sure if this should go here or off-topic, but Nissan (surprisingly) did very poorly in this. Perhaps there was too much emphasis on cost cutting and getting discounts? Maybe Renault folks are gumming up the works?
Suppliers love Toyota and Honda: Why that matters to you
What does Toyota know that Nissan doesn't?
http://www.autoblog.com/2017/05/15/supp ... to00000016
GM has REALLY improved here. I'd known for a long time that GM used to be notoriously bad here but now they've rocketed up to be in 3rd place. Had forgotten that Chrysler's supplier relations were always bad.