Mexico has been in 15 world cups. The only tournaments that they were not in were the 1934, 1938, 1974, 1982 and 1990 world cups.
2, 1970 and 1986
=== === Brazil won 5 World Cups, of course Brazil have lost the others, but have never been bitten by Mexico in decisives, importants matches of any World Cups
none
13 World Cups
Just one, in 1986.
0 times they have never won it
There have been 4: Mexico (1970, 1986), USA (1994), Korea/Japan (2002).
two world cups 1970 and 1974
Mexico have been in the world cup 4 times
15
19