 The following year, the Dolphins completed the NFL's only perfect season, culminating in a Super Bowl win, winning all 14 of their regular season games, and all three of their playoff games, including Super Bowl VII.They were the third NFL team to accomplish a perfect regular season.The next year, the Dolphins won Super Bowl VIII, becoming the first team to appear in three consecutive Super Bowls, and the second team (the first AFL/AFC team) to win back-to-back championships.