this gp systen have not steer we wrong ! this system manuver we through Pittsburgh flawlessly . if a wrong turn be make it re route we quickly and leave no time for panic because we be right back on track . I be extremely pleased with this product and would reccomend it to other . my only concern be download new map , we be unsure how and where this can take place in the future when new map be need . overall , work great and very happy .