To become a Supersonic Legend player in Rocket League your MMR needs to be approximately more than 1862 MMR depending on the game mode you play in matchmaking. Below you can find the range of Supersonic Legend players and their various MMR rankings depending on which game mode they are playing.

How do you get supersonic in legend legends?

When you reach the following MMR tiers in game mode, you'll unlock the door to the Supersonic Legend rank. If you haven't checked your MMR before, you can do so by navigating to the ranked selection screen in the Competitive section of the game.

How many hours does it take to reach supersonic legend?

The pros in Rocket League have over six thousand hours and to hit Supersonic Legend on average takes over three thousand, so there is still a lot of grinding ahead.