I think the Big Mac Index has been used to compare prices across countries however Brazil currently has very high
prices due to a combination of inflation and a strong economy, and this
shows up glaringly in the Big Mac Index.
It has recently been reported
that the Brazilian government has persuaded McDonald's to lower the
price of the Big Mac (relative to other McDonald's items), so that
Brazil's Big Mac Index becomes more competitive.
I believe something similar has
happened in Argentina, where the Big Mac is part of the CPI and is much
cheaper relative to competitors and other McDonald's items, apparently
because of government intervention.
