Safety standards matter. The cheapest Nissan sold in Mexico, the Tsuru, and the cheapest Nissan sold in the USA, the Versa, were driven into one another at 40 miles per hour. You don't want to be in either car, but you definitely don't want to be in the Tsuru.
A car-to-car test between a 2015 Nissan Tsuru, the least expensive sedan sold by Nissan in Mexico, and a 2016 Nissan Versa, the least expensive sedan sold by Nissan in the United States. With a 50% overlap and each vehicle travelling at 40 mph (64 km/h) the test highlights the significant differences in safety standards between these two baseline models sold by the same manufacturer in different markets.
Wired reports that the Tsuru (basically a 1990s Sentra) is being put to pasture soon, and that Mexico is toughening its car safety laws.