NASCAR champion Kyle Busch passed away due to severe pneumonia that led to sepsis, as stated by his family on Saturday. The family shared that pneumonia severely progressed into sepsis, causing swift, overwhelming complications.
Bush holds the record for most race wins in NASCAR’s top three series. He died suddenly on Thursday after collapsing the previous day while using a driving simulator at a General Motors facility in Concord, North Carolina.
Sepsis is a dangerous medical condition where the body reacts extremely to an infection, causing harm to tissues and organs, according to the Centers for Disease Control and Prevention.
This marks the Busch family’s first communication since Thursday. Previously, they announced on social media that Kyle suffered a severe illness leading to hospitalization and would be absent from the weekend’s Coca-Cola 600, a major race in the season.
An LED screen tribute to Kyle Busch was observed at Charlotte Motor Speedway on May 23, 2026, during practice for the NASCAR Cup Series Coca-Cola 600.
A 911 call obtained by CBS News revealed that Busch had breathing difficulties, felt overheated, and coughed up blood the day before his death. During the call, someone calmly reported: “I’ve got an individual with shortness of breath, very hot, thinks he’s going to pass out, and he’s coughing up some blood.” Busch was found on the bathroom floor of the complex, according to information from the Cabarrus County Sheriff’s Office.
About two weeks prior, while racing at Watkins Glen, Busch was heard on his team radio requesting a doctor after the race concluded due to a sinus cold. Despite his health issues, he clinched a win in the Craftsman Truck Series race at Dover Motor Speedway on May 15.
Busch won Cup Series championships in 2015 and 2019 with Joe Gibbs Racing. He leads in victories in the O’Reilly Auto Parts Series with 102 wins and in the Craftsman Truck Series with 69 wins, the second and third tiers of the sport. Including 63 victories in the Cup Series, he amassed a record-breaking 234 wins across NASCAR’s top divisions.

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