Leave a convoy in Forza Horizon 6 by opening Online > Convoy, going into Manage Convoy, and selecting Leave Convoy. Here are all the steps to get you going.
How to leave a convoy
Pause the game. Select the Online options tab.

Then choose Convoy. This shows the group you are currently in.

Step 3: Open management options
Press Y on Xbox or Triangle on PlayStation to bring up Manage Convoy. That is where the leave option lives.
Step 4: Exit the group
Select Leave Convoy and confirm the prompt if needed. You will return to solo play or a regular free-roam session.

Common hiccups
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If Leave Convoy is missing, reopen Manage Convoy or switch sessions to refresh the menu.
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If you only want to stop online play temporarily, switching to solo first can also help.
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If the convoy still shows after leaving, back out to the main menu and re-enter the game session.

And that’s the quickest way to drop out of a convoy and get back to solo driving in Forza Horizon 6.