st annual North American Automotive OEM - Supplier Working Relations Index ® (WRI ®) Study released today by Plante Moran show that in spite of the serious challenges facing automakers and their suppliers this past year, four of the six major U.S. and Japanese automakers improved their scores. Two automakers worsened. The 2021 NA Automotive OEM Buyer – Supplier Working Relations Index shows Toyota and Honda remaining in first and second place overall, with General Motors and Nissan improving significantly, and Ford and FCA/Stellantis dropping significantly. New this year is a scoring of ...