Complete schedule Limited schedule Notes Changes Teams • On September 22, 2020,
Kaulig Racing owner Matt Kaulig revealed on reporter Kelly Crandall's podcast that he hoped that his team would expand to three full-time cars plus one part-time car for the 2021 season. The team did end up expanding to three full-time cars, as the No. 16 of
A. J. Allmendinger will go from part-time to full-time. In terms of the fourth part-time car,
Ross Chastain appears to be a potential driver for it, as he has expressed interest in continuing with the team part-time after he moves to the Cup Series full-time. • On November 4, 2020, it was announced that
Rick Ware Racing would be fielding two full-time Xfinity Series teams. The team returned to the series to attempt two races in late 2020 after about a year and a half away, reviving the No. 17 car. Despite this announcement, it was later revealed on February 6, 2021 that RWR would only be fielding the No. 17, which would have an alliance with SS-Green Light Racing, similar to the partnership they had with them for No. 07 car in 2020. • On December 3, 2020, it was revealed that
DGM Racing would be fielding a fourth car for the first time, with team owner
Mario Gosselin piloting the No. 91 in the season-opener at Daytona for his first Xfinity start as a driver since
2017. The car was also on the entry list the following week at the Daytona Road Course with
Preston Pardus, but it was excluded from the field due to lack of owner points with the entry list having over 40 cars, and Pardus replaced
Caesar Bacarella in the team's No. 90. It is unclear if the car will attempt additional races later in the season. • On January 19, 2021,
Big Machine Records founder
Scott Borchetta announced that he and the company were starting a full-time Xfinity Series team, Big Machine Racing, which will field the No. 48 Chevrolet. The team bought cars and equipment from
RSS Racing/Reaume Brothers Racing's No. 93 car in 2020. • On September 21, 2020, it was announced that
Ross Chastain would be moving up to the Cup Series full-time in 2021, driving the No. 42 for
Chip Ganassi Racing, therefore vacating the No. 10 for
Kaulig Racing, his full-time Xfinity ride in 2020. Chastain then revealed on September 22 that he has plans to return to the team for a part-time schedule, although this did not end up happening. • On October 22, 2020, it was announced that JR Motorsports
CARS Late Model Stock Tour driver and 2020
NASCAR Advance Auto Parts Weekly Series champion
Josh Berry would race in the Xfinity Series part-time for JRM, sharing the team's No. 8 car with Mayer. Berry will drive in 12 races during the first half of the season before Mayer's 18th birthday. The official announcement of Herbst driving the No. 98 came on December 10, 2020. • On May 3, 2021, Our Motorsports announced that
Tanner Berryhill would drive the No. 23 at Darlington in May and both Texas races. This is Berryhill's first start in the series since
2014 (although he did have 1 DNQ in both
2015 and
2018), and first start in NASCAR since
2018, when he drove for
Obaika Racing in the last two races of the Cup Series season. • On July 8, Rick Ware Racing announced that
Andrew Ranger, their
NASCAR Pinty's Series driver, would drive the No. 17 entry at
New Hampshire, but the deal fell through and
J. J. Yeley drove the car instead of Ranger. • On July 10, 2021, JR Motorsports announced that
Austin Dillon would drive the No. 1 car at
Atlanta as a substitute for
Michael Annett, who suffered a leg injury while he was exercising a few weeks before. On July 12, Josh Berry was announced as Annett's substitute at
New Hampshire. Despite missing the two races, Annett was granted a playoff waiver by NASCAR. After returning at Watkins Glen, Annett's injury worsened when competing in that race and as a result, he did not run the next two races. Annett was replaced by
Chase Elliott at the Indy Road Course and Berry at Michigan. Berry again drove the No. 1 at Bristol, Las Vegas (a race which he would win) and Talladega after Annett reinjured his leg while working out. Annett returned from his injury for the race at the Charlotte Roval and would also drive the car at Texas and Kansas. • On August 31, 2021,
Jordan Anderson Racing announced that
Austin Dillon would drive the No. 31 at the
Sport Clips Haircuts VFW Help a Hero 200 at Darlington. • On September 4, 2021, Our Motorsports announced that
Ty Dillon would drive the No. 02 that day in the race at Darlington as a substitute for Brett Moffitt, who was out for unspecified medical reasons. On September 22, Jordan Anderson Racing announced that Dillon would drive their No. 31 at Las Vegas.
Crew chiefs • On November 13, 2020, it was announced that Travis Mack, previously the crew chief for
Michael Annett and the No. 1 car for
JR Motorsports, would be leaving for the new
Trackhouse Racing Team in the Cup Series to crew chief
Daniel Suárez's No. 99 car. • On November 17, 2020,
Joe Gibbs Racing announced changes to their crew chief lineup in 2021. However, this did not end up happening, as instead of Rursch, Ryan London was listed as the team's crew chief for the first two races of the season and then
Eddie Troconis was for the next two races. All three of them also work for other teams in addition to the No. 92. (Rursch works for
Venturini Motorsports in ARCA while London and Troconis work for
Young's Motorsports in the Truck Series.) Steven Hazelbaker made his crew chiefing debut at Phoenix in March with Williams and the No. 92. • On February 2, 2021, it was announced that DGM Racing crew chief Nathan Kennedy would move with the Bassett brothers, who both previously drove part-time for DGM, to their new team in the series, the No. 77. • On May 3, 2021, RSS Racing announced that
Shane Wilson would rejoin the team as the crew chief for Ryan Sieg's No. 39. He was the crew chief for the same car in 2019. He left for
David Gilliland Racing to crew chief
Tanner Gray's No. 15 in the Truck Series in 2020. DGR released him on April 30, 2021.
Jason Ratcliff, the crew chief for
Harrison Burton's No. 20, also had to miss the race (
Joe Gibbs Racing did not announce why), and engineer Dustin Zacharyasz filled in as crew chief. • On October 26, 2021, NASCAR suspended
Our Motorsports No. 23 crew chief Kenneth Roettger Jr. for four Xfinity points races after the car lost a ballast during the
Kansas playoff race. Ronnie Osmer, who crew chiefed the team's No. 03 car when it did not qualify for races due to being too low in owner points, would fill in as the interim crew chief of the No. 23.
Manufacturers • On January 11, 2021, after over 10 seasons with
Chevrolet and
ECR Engines,
RSS Racing announced its manufacturer switch to
Ford, with engines supplied by
Roush-Yates Engines. However, this change would only be for the team's No. 39 car, as the No. 23 (previously No. 93) car, fielded jointly with Reaume Brothers Racing and later Our Motorsports, as well as their ARCA car, would still remain Chevrolets. ==Schedule==