The 1974 New York Mets season was the 13th regular season for the Mets, who played home games at Shea Stadium. Led by manager Yogi Berra, the team finished the season with a record of 71–91, placing fifth in the National League East. This was the first time the Mets had a losing season since 1968.
The Mets had 5 consecutive winning seasons from 1969 to 1973. 
If their last losing season was 1968 and they also had a losing season in 1974, that means the won in 1969, 1970, 1971, 1972, and 1973, which is 5 consecutive seasons. 