Mexican Customs (Aduana – SAT) has published several key new importation rules that affect both tourists and expats entering Mexico. These rules take effect on November 1, 2011, affecting the amount of non-personal items that Mexicans can bring into Mexico by land, and changing the age of vehicles that can be permanently imported for both Mexicans and foreigners.
In short, Aduana has raised the limits from $75 USD to $300 USD exempt from duties for non-personal items, and 8 and 9 year old vehicles are now eligible for permanent importation.
To learn more, visit the SAT website's section on Aduana’s Importation Rules.
It includes useful links to describing rules on allowed baggage, applying online Temporary Importation for vehicles, access to the current status of applications, and the costs for importing specific vehicles using your vehicle’s VIN.