Tyler Reddick, the 2018 Xfinity Series champion as well as the Rookie of the Year.Cole Custer finished second behind Reddick in the championship.Daniel Hemric finished third in the championship.Christopher Bell, the defending Truck Series champion, who moved up to the Xfinity Series full-time in 2018, finished fourth in the championship.Justin Allgaier, the regular season champion, finished seventh in the championship.Chevy won the manufacturer's championship.
The 2018 NASCAR Xfinity Series was the 37th season of the NASCAR Xfinity Series, a stock car racing series sanctioned by NASCAR in the United States. William Byron won the 2017 championship with JR Motorsports, but moved up to the Monster Energy NASCAR Cup Series. Tyler Reddick, who replaced Byron in the No. 9 JR Motorsports Chevrolet Camaro SS, won the drivers' championship. Stewart-Haas Racing with Biagi-DenBeste won the owners' championship.
This was the third year that the Xfinity Series (and the Truck Series) had a playoff system. For the first time in the three years of the playoffs at that time, Elliott Sadler and Justin Allgaier were not part of the "championship 4" drivers competing for the title at Homestead. Both drivers did qualify for the postseason but did not advance to the last round of the playoffs as they had done the past two years.
The 2018 season was the first to feature the Regular Season Championship trophy, which is awarded at the final race before the playoffs.[1] Justin Allgaier clinched the NXS Regular Season Championship trophy after the 2018 DC Solar 300 at Las Vegas Motor Speedway.[2]
This was the final season of the Toyota Camry in the Xfinity Series, as it was replaced by the Supra in the 2019 season.[3] It was also the final season of Dodge as a manufacturer, as the new flange-fit composite body rules have made the former Team Penske Challengers (nicknamed "Zombie Dodges" due to their lack of factory support since 2013) used by smaller teams ineligible due to their welded steel bodies.[4][5]
This was also the last year of 5-time Xfinity Champion Roush Racing in Xfinity. After this season, Roush continued only in the Cup Series.
^"NASCAR unveils Regular Season Championship trophies". NASCAR. August 14, 2018. Retrieved September 11, 2018.
^"Justin Allgaier locks up Regular Season Championship run". NASCAR. September 15, 2018. Retrieved September 16, 2018.
^Albert, Zack (July 5, 2018). "Revival of the Fittest: Toyota Supra Coming to NASCAR Xfinity Series". NASCAR.com. Digital Media LLC. Retrieved November 23, 2018.
^Nguyen, Justin (November 16, 2018). "NASCAR Bids Farewell to Dodge after 2018". www.thecheckeredflag.co.uk. Retrieved November 20, 2018.
^King, Alanis (November 15, 2018). "The Era of NASCAR's Zombie Dodge Ends This Weekend". Jalopnik. Gizmodo Media Group. Retrieved November 24, 2018.
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