This great blog and page gives a lot of information:
The ever-helpful, very talented Mexican attorney Spencer McMullen ( Chapalalaw.com ) has offered the following summary of the new Aduana rules for permanent vehicle imports by private individuals.
“What vehicles can be imported:
~ Used NAFTA cars and non-dually pickups: VIN shows they were made or assembled in Mexico, the USA or Canada.
~ 8 to 9 year old cars. **
~ Vehicles whose rights are restricted or prohibited from being driven in their home country are prohibited from importation.