The Mets' most wins in the regular season is 108 (with 54 losses), in 1986. Including the postseason the Mets won 116 that year, which at the time stood as the highest total since the 1906 Cubs. This accomplishment is somewhat misleading (and therefore widely ignored). Before 1969 there was no League Championship Series, and in 1975 (when the Reds won 108 regular season games, the LCS, and the World Series) the LCS was a best of 5 series. The 1998 Yankees, with the benefit of 3 postseason rounds, managed a remarkable 125-50 record including the postseason. They went 114-48 in the regular season and 11-2 in the postseason.
108
In 2011, the New York Mets had a 77-85 record.
108 in the 1986 season
As of the 2009 season, the New York Mets have an all time team record of 3,655 wins, and 3,981 losses.
Through the 2012 season, the Mets franchise win loss record is 3,885 - 4,237.
1962 was the first year for the New York Mets, the National League expansion team that Major League Baseball created to replace the Giants and Dodgers that had moved to California. In 1962, the Mets, led by manager Casey Stengel, had a record of 40-120, an all time record for futility. By the way, the Houston Colt '45s, later re-named the Astros, also joined the National League that year as the other expansion team. Their record was 64-96 and finished 8th in the 10 team league, ahead of the Chicago Cubs and the Mets.
The MLB record for fewest wins by a team in a season was set by the 1899 Cleveland Spiders. They won 20 games that season and lost 134. The 134 losses is also an MLB record for most losses by a team in a season.
108 in the 1986 season
The Mets' 108-win total from 1986 was a club record, not an MLB record. Since then, that win total has been surpassed by the New York Yankees (114 in 1998), and the Seattle Mariners (116 in 2001). The closest the Mets have come is 100 wins in 1988.
108 wins and 54 losses
In 1999, the New York Mets had a 97-66 record.
In 2000, the New York Mets had a 94-68 record.