Nintendo Drops Mario Kart 8 Deluxe 4.0.1 Bug-Fix Update
The October 15, 2026 patch targets obstacle counts in online play, user selection and a crash on Switch 2.
Nintendo released Mario Kart 8 Deluxe version 4.0.1 on October 15, 2026, a bug-fix update for both Nintendo Switch and Nintendo Switch 2. The patch addresses several issues reported by players, according to gamerant.com.
On Nintendo Switch 2, the update corrects a problem where the number of obstacles or Item Boxes would increase during Online Play and Wireless Play compared to Nintendo Switch. It also fixes an issue where some Star Bits would not be displayed when driving on Wii Rainbow Road on Nintendo Switch 2.
Another fix resolves a problem that prevented players from selecting a user registered to the system when playing with two players in Online Play and Wireless Play. The update additionally addresses an issue where the game would close unexpectedly when certain conditions were fulfilled.
Background
Mario Kart 8 Deluxe released in April 2017 shortly after the launch of Nintendo Switch and has sold more than 70 million copies. In September 2026, the game received a Switch 2 update adding shorter load times, 8-player split-screen multiplayer and CameraPlay support. Mario Kart World was released as a launch title for Nintendo Switch 2.
Quick answers
When was Mario Kart 8 Deluxe version 4.0.1 released?
Nintendo released the update on October 15, 2026.
What does the 4.0.1 update fix?
It fixes issues with obstacle and Item Box counts during Online Play and Wireless Play on Switch 2, user selection in two-player online and wireless play, missing Star Bits on Wii Rainbow Road on Switch 2, and an unexpected game close.
Which platforms received the update?
The update is available for both Nintendo Switch and Nintendo Switch 2.