The 2019 NASCAR Xfinity Series was the 38th season of NASCAR's second-tier national stock-car racing championship, sanctioned by NASCAR. It functioned as a national touring series and a primary development platform for drivers, crew chiefs and teams aiming to compete at the premier Cup level. The season combined short tracks, intermediate ovals, superspeedways and road courses to test driver versatility.

Season overview and champion

Tyler Reddick won the 2019 championship, repeating his title from the previous year and underscoring his status as one of the series' leading prospects. His performance across the season and in the playoff rounds secured the overall crown, a notable achievement that highlighted the Xfinity Series' role in preparing drivers for advancement to the NASCAR Cup Series.

Format and characteristics

  • Schedule: The series ran a multi-race national schedule, staging events alongside many Cup Series weekends and at a diverse set of venues.
  • Playoffs: The championship was decided through a playoff format that narrowed the field to a final group of contenders for the season finale.
  • Cars and competition: Xfinity cars are stock-car platforms similar to the Cup Series but regulated with differences in specifications, allowing teams and drivers to focus on development and racing fundamentals.

Manufacturers and established teams competed strongly in 2019, with drivers using the series to build experience in traffic management, tire and setup strategy, and racecraft. The Xfinity Series continued to attract a mix of rising stars, veteran competitors, and occasional Cup drivers in select events.

History and significance

Originating in 1982 as what was commonly called the Busch Series, the championship has gone through sponsorship-driven name changes (including Nationwide) and has been known as the Xfinity Series since 2015. It serves both as a standalone championship with its own traditions and as a feeder series that shapes talent and strategy for NASCAR's top level.

Because the series blends driver development with high-level competition, winning an Xfinity title is widely regarded as an important step in a driver's career. The 2019 season reinforced that pattern by producing a repeat champion and showcasing competitive depth across teams and tracks.