Penz Automotive Group is a locally-owned dealer group in Rochester, MN. Penz Auto includes Rochester automotive dealerships. ... Subaru of Rochester, Buick GMC of Rochester, and Nissan of Rochester. All Penz Auto dealerships sell and service new vehicles, pre-owned (used) vehicles, and certified pre-owned (CPO) vehicles. All sales and service staff are certified by their respective manufacturers, leading to the highest quality purchase experience and the highest quality repair and maintenance. read more