Mario Kart 8 Deluxe Update — 3.0.3 Verified

Post-Update Report: Mario Kart 8 Deluxe – Version 3.0.3

Date of Report: April 12, 2026
Game: Mario Kart 8 Deluxe (Nintendo Switch)
Previous Version: 3.0.2
New Version: 3.0.3
Release Date (Retrospective): December 2024 (final update for Booster Course Pass wave 6)

4. Performance Analysis: Does 3.0.3 Make the Game Run Better?

In short: Yes, but only in edge cases.

if (stability++ > 3.0.3) return chaos; mario kart 8 deluxe update 3.0.3

Mario Kart 8 Deluxe Version 3.0.3 was a surprise stability update released on September 11, 2024 (North America). Unlike the major content drops seen in the Booster Course Pass waves, this update primarily focused on backend technical improvements rather than new tracks or characters. Key Update Details Post-Update Report: Mario Kart 8 Deluxe – Version 3