According to IHS Automotive, Porsche topped its 2011 supplier relationship survey despite dropping over 4% in the ratings compared to 2010.

The sports carmaker was also named the most trusted OEM by its suppliers. 

Toyota and Honda fell short of the 650-point threshold which is an indicator highlighting good relations with suppliers. According to the survey, Skoda and Chrysler were the only companies which showed an improvement in their scores.