The Green Bay Packers won Super Bowl XLV following the 2010 season as a wildcard. That was the only time the Packers won a Super Bowl as a wildcard.
Yes. Green Bay was a wild card team this year. Pittsburg was a wild card team (#6 seed) in 2008. I'm not sure how often it has happened but I know it has been done.
No.
No, but Dallas did advance to the Super Bowl as a wild card in 1975 but lost to Pittsburgh
There have been 9 wild card teams to play in the Super Bowl (includes the Giants in Super Bowl XLII) and four have lost: Super Bowl X - Pittsburgh Steelers 21, Dallas Cowboys 17 Super Bowl XX - Chicago Bears 46, New England Patriots 10 Super Bowl XXVII - Dallas Cowboys 52, Buffalo Bills 17 Super Bowl XXXIV - St. Louis Rams 23, Tennessee Titans 16
If it qualified as a wild card, a Super Bowl champion can play as many as 20 contests -- 16 regular season games, the wild card round, the divisional round, the conference championship and the Super Bowl. A team with a first-round bye wins 19 games on its way to the Super Bowl title.
Oakland raiders
1981 Oakland Raiders
The Raiders became the first wild card playoff team to win a Super Bowl.
1980 Oakland Raiders that won Super Bowl XV over the Eagles.
1975 Dallas Cowboys who lost to the Pittsburgh Steelers in Super Bowl X. The Cowboys finished the regular season 1 game behind NFC East Division champion St. Louis Cardinals. They defeated the Vikings and Rams to make it to the Super Bowl while the Cardinals lost to the Rams in the first round.
The only wild card team to ever win the superbowl is the Pittsburgh Steelers
Yes, the Pittsburgh Steelers (AFC) in 2005 and Green Bay Packers (NFC) in 2010. Both were second wild-card teams (6th seed).