Nav used to be a $1.5K option... (or was it $2.5?) I have seen 4.6iS overseas that had no Nav and had 19" wheels as standard... I even had to stop and take second look... it was in Costa Rica - there are no Nav maps for Latin America, so there is no need for navigation... no wonder that the dealer's mechanics were checking my car inside/out when i had it there for an oil change, as it turned out to be one of 5 4.6iS inthe whole country, and mine seemed to have options that they never saw before... lol...