Mercedes Benz maybe fighting tarnished quality perception here in the United States, but a sampling of consumers in Australia find them to be the automotive brand they trust the most. Australian Reader's Digest performed the poll and Managing Director and Publisher of Reader's Digest said: "Trust plays in our purchasing decisions. In short, the most trusted brands are the ones we purchase most." Um, OK. Mercedes also faired better in the recent J.D. Power survey released this week. Perceived quality is so fickle.