Here is the latest and most up to date Mexico Topo Map
July 2012 and it is also a Mexico GPS Map
with turn by turn direction in English and Spanish
Added 20 meter (60 feet) contours for the full country
· Added a full new hydrology data set. Now the river outlines have a very high precision and we increased the coverage in all the country.
· About 550,000 new points of interest of which 200,000 are natural ones to support better off road navigation. The remainder are increased urban POIs.