The economy of Mexico is the 11th largest in the world and is a free market mixed economy, and is firmly established as an upper middle-income country The economy contains rapidly developing modern industrial and service sectors, with increasing private ownership.
Mexico City is the capital and largest city of Mexico. Mexico City is is one of the major political, economic, cultural and financial centers of the country. The city federal district produces 21.8% of the country’s gross domestic product.
Mexico City has an overall cost of living index which equates it with middle cost of living locations. The overall cost of living index is comprised of the prices for defined quantities of the same goods and services across all 13 Basket Groups.
The latest cost of living rank for each of the 13 Basket Groups is now available.
Expatriate International Cost of Living 
Nice post, it is interesting that, despite the eleventh economy is still persistent problems of poverty and wealth distribution, it is clear the abysmal differences in income among the population, some cities have income above others. A clear example we have the percapita GDP of Mexico is about 13 000 USD, but Mexico City, the main city of the country where all power is concentrated economic and political development, has a GDP per capita comparable to Germany or some European countries with 33 or 35 thousand USD. The cost of living in Mexico City is high for the middle and lower classes, some of the basic basquet products that have been raising prices by inflation and it affects the population with fewer resources. Today buy a tortilla requires greater financial means will not affect your income and savings. Nice blog, and sorry for my English, I speak not very well and I hope I have understood.
Dear ernestohdz86
Thank you for you comment, it is important for people that are moving to Mexico City to understand how difficult it can be and how expensive living expenses are. We usually find that the main cities in most countries have a higher cost of living. Your English is excellent and I found your comment very interesting.
Very good article but pricewater coopers disagree with this information on 11th economy in the World, according to pricewattercoppers Mexico City is the 6th largest economy of the World.
Consulting houses use various criteria to determine the size of an economy, most have similar outcomes but it is dependent on what criteria was used.
CIA, lists the following : https://www.cia.gov/library/publications/the-world-factbook/geos/mx.html
BBC website has some interesting facts as well.
Wikipedia, lists the countries by Nominal GDP, have a look at this – http://en.wikipedia.org/wiki/List_of_countries_by_GDP_(nominal)
in this case it differs to both ours and Pricewaterhouse Coopers.