Connor Zilisch turned heads in the 2025 NASCAR Xfinity Series season with a series of impressive performances, notching 10 significant victories and earning widespread praise. Despite his remarkable accomplishments, Zilisch’s achievements stopped short of eclipsing the longstanding Kyle Busch Xfinity Series records, a testament to the dominance Busch has displayed in the competition.
The young driver, Zilisch, entered a total of 32 races and secured 10 wins, resulting in a win percentage of 31.25%. This figure stands as the fourth-highest single-season win rate in Xfinity Series history, underscoring Zilisch’s exceptional skill and consistency. When looking at the leaderboard, it’s evident that Kyle Busch’s records remain superior, with Busch achieving a 33.33% win rate in 2008, winning 10 of 30 races, which puts him third on the all-time list.
Kyle Busch’s Dominance Sets the Benchmark
Taking second place in Xfinity Series history is Busch’s astonishing 2010 season. That year, he started 29 races and captured 13 victories, yielding a win percentage of 44.83%. Busch’s finest run came in 2013, when he participated in only 26 events but crossed the finish line first in 12, posting an unmatched win rate of 46.15%. His consistent dominance over multiple years prompted NASCAR to rethink the rules, as seasoned Cup Series drivers like Busch seemed nearly unstoppable compared to their Xfinity counterparts.
“Best win percentage in an Xfinity Series season all time (minimum 75% of the races started) pic.twitter.com/0SlRitqkeR” — NASCAR Insights (@NASCARInsights)
As a result, the governing body implemented a regulation in 2020 that capped Xfinity Series race participation at five events per year for drivers with three or more years of Cup Series experience. This change allowed emerging talents a better chance to shine while ensuring the second and third-tier competitions remained competitive. Busch, always focused on victory, pivoted his attention more fully to the Cup Series without missing a beat in terms of on-track results.
New Rules Open Doors for Rising Talent, But Busch’s Record Persists
Even with the emergence of new stars like Zilisch and the attention they command, no driver has yet been able to topple the records set by Busch. The introduction of the participation limit was expected to level the playing field, yet Busch maintained his status as a formidable competitor. Demonstrating this resilience, in 2021, he entered five Xfinity races and emerged victorious in all of them, achieving a flawless season despite the tightened restrictions.
Busch’s Xfinity Series win total now stands at an awe-inspiring 102—a record figure in NASCAR’s second-tier racing division. At 40, Rowdy Busch continues to compete at an elite level and remains a force in the sport. As he nears the twilight of his racing journey, it is widely believed within NASCAR circles that Busch may add even more wins, further extending his legacy before he retires.
Lasting Impact of Busch’s Era on the Xfinity Series
Kyle Busch’s unprecedented success, marked by higher win rates and a triple-digit victory count, has left a significant mark on the Xfinity Series, shaping the way rules were adjusted and new talent is recognized. While rising stars such as Zilisch capture the imagination of fans with breakthrough performances, the enduring standard set by Busch continues to define greatness in the series. As records are pursued and new storylines develop, the Kyle Busch Xfinity Series records remain the ultimate target for every ambitious driver.
Best win percentage in an Xfinity Series season all time (minimum 75% of the races started) pic.twitter.com/0SlRitqkeR
— NASCAR Insights (@NASCARInsights) December 31, 2025
