NASCAR mengembangkan mobil generasi selanjutnya yang dinamai [[Next Gen (NASCAR)|Next Gen]], yang dijadwalkan untuk dipakai mulai musim {{NASCAR Cup|2022}}. Paket aturan musim {{NASCAR Cup|2019}} menjadi titik awal pengembangan mobil baru ini. Selain itu, mobil Next Gen dimaksudkan untuk menarik pabrikan peralatan orisinal (OEM) baru untuk bersaing dengan Chevrolet, Ford, dan Toyota.<ref>{{cite web |url=https://www.nascar.com/news-media/2019/02/03/generation-7-nascar-date-2021/ |title=Generation next: 2021 the target for Gen-7 race car |first=Zack |last=Albert |website=NASCAR.com |publisher=NASCAR Digital Media, LLC. |date=February 4, Februari 2019 |accessdate=February 5, Februari 2019 |archive-url=https://web.archive.org/web/20221224014635/https://www.nascar.com/news-media/2019/02/03/generation-7-nascar-date-2021/ |archive-date=24 Desember 2022}}</ref> Mobil Next Gen diuji di [[Richmond Raceway]] dengan [[Austin Dillon]] pada 8-9 Oktober, di [[Phoenix Raceway]] dengan [[Joey Logano]] pada 9-10 Desember, di [[Homestead-Miami Speedway]] dengan [[Erik Jones]] pada 15-16 Januari dan di [[Auto Club Speedway]] dengan [[William Byron]] pada 2–3 Maret. Mobil purwarupa tes ini dibuat oleh [[Richard Childress Racing]] dengan menggunakan bodi generik.<ref>{{cite web |url=https://www.jayski.com/2019/10/07/nascar-to-test-nextgen-car-at-richmond/ |title=NASCAR to test Next Gen car at Richmond |first=Scott |last=Page |website=[[Jayski's Silly Season Site]] |publisher=NASCAR Digital Media, LLC. |date=October 7, Oktober 2019 |accessdate=October 8, Oktober 2019 |archive-url=https://web.archive.org/web/20220505195443/https://www.jayski.com/2019/10/09/nascar-to-test-nextgen-car-at-richmond/ |archive-date=5 Mei 2022}}</ref> Mobil Next Gen awalnya akan diturunkan mulai lomba Daytona 500 2021 dengan mobil Generasi 6 digunakan untuk lomba non-poin Busch Clash yang akan menggunakan konfigurasi lintasan jalan (roval) Daytona.<ref>{{cite web |url=https://www.nascar.com/news-media/2019/10/09/nascar-next-gen-car-photos-look-debut-richmond/ |title=Next Gen car makes on-track test debut at Richmond |website=NASCAR.com |publisher=NASCAR Digital Media, LLC. |date=October 9, Oktober 2019 |accessdate=October 10, Oktober 2019 |archive-url=https://web.archive.org/web/20221224014635/https://www.nascar.com/news-media/2019/10/09/nascar-next-gen-car-photos-look-debut-richmond/ |archive-date=24 Desember 2022}}</ref><ref>{{cite web |url=https://www.nascar.com/news-media/2019/12/10/joey-logano-first-impressions-next-gen-car-phoenix-test/ |title=Early impressions: Joey Logano finds a 'challenging' Next Gen car in Phoenix test |first=Zack |last=Albert |website=NASCAR.com |publisher=NASCAR Digital Media, LLC. |date=10 Desember 2019 |accessdate=12 Desember 2019 |archive-url=https://web.archive.org/web/20221207003953/https://www.nascar.com/news-media/2019/12/10/joey-logano-first-impressions-next-gen-car-phoenix-test/ |archive-date=7 Desember 2022}}</ref><ref>{{cite web |url=https://www.nascar.com/news-media/2020/01/10/erik-jones-drive-next-gen-car-two-day-test-miami/ |title=Erik Jones to drive Next Gen car in two-day test at Miami |publisher=NASCAR Digital Media, LLC. |date=10 Januari 2020 |accessdate=16 Januari 2020 |archive-url=https://web.archive.org/web/20221224014635/https://www.nascar.com/news-media/2020/01/10/erik-jones-drive-next-gen-car-two-day-test-miami/ |archive-date=24 Desember 2022}}</ref><ref>{{cite web |url=https://www.jayski.com/2020/02/25/william-byron-to-test-next-gen-car-at-auto-club-speedway/ |title=William Byron to test Next Gen car at Auto Club Speedway |website=Jayski's Silly Season Site |publisher=NASCAR Digital Media, LLC. |date=25 Februari 2020 |accessdate=28 Februari 2020 |archive-url=https://web.archive.org/web/20220628150953/https://www.jayski.com/2020/02/25/william-byron-to-test-next-gen-car-at-auto-club-speedway/ |archive-date=28 Juni 2022}}</ref><ref>{{cite web |last1=Pockrass |first1=Bob |title=The 2021 Busch Clash will be on the Daytona road course on the Tuesday night prior to the Daytona 500. It will use the 2020 cars (not the NextGen car). Daytona 500 pole qualifying Wednesday with duels Thursday. ARCA-Xfinity doubleheader on day before D500. #nascar @NASCARONFOX |url=https://twitter.com/bobpockrass/status/1235264432978132992 |website=Twitter |publisher=@bobpockrass |accessdate=4 Maret 2020 |archive-url=https://web.archive.org/web/20221203054644/https://twitter.com/bobpockrass/status/1235264432978132992 |archive-date=3 Desember 2022}}</ref> Namun, karena penundaan pengujian yang disebabkan oleh [[pandemi COVID-19]], mobil Gen-6 tetap akan digunakan sepanjang musim 2021.<ref name="Jayski">{{cite web |url=https://www.jayski.com/2020/04/02/nascar-delays-next-gen-car-implementation-until-2022/ |title=NASCAR delays Next Gen car implementation until 2022 |website=Jayski's Silly Season Site |publisher=NASCAR Digital Media, LLC. |date=2 April 2020 |accessdate=3 April 2020 |quote=NASCAR is expected to use the Gen 6 car at the 2022 non-championship race at Daytona because of an availability of chassis at the time of launch. |archive-url=https://web.archive.org/web/20221127150231/https://www.jayski.com/2020/04/02/nascar-delays-next-gen-car-implementation-until-2022/ |archive-date=27 November 2022}}</ref>
