2021 NASCAR Whelen Euro Series

The 2021 NASCAR Whelen Euro Series is the thirteenth Racecar Euro Series season, and the ninth under the NASCAR Whelen Euro Series branding. Alon Day, Vittorio Ghirelli, and Alain Mosqueron are the reigning champion in the EuroNASCAR PRO, EuroNASCAR 2, and EuroNASCAR Club Challenge division respectively, although Ghirelli will not defend his title after he was promoted to the EuroNASCAR PRO class. Hendriks Motorsport will enter the season as the defending team's champion.

2021 NASCAR Whelen Euro Series

The 2021 NASCAR Whelen Euro Series is the thirteenth Racecar Euro Series season, and the ninth under the NASCAR Whelen Euro Series branding. Alon Day, Vittorio Ghirelli, and Alain Mosqueron are the reigning champion in the EuroNASCAR PRO, EuroNASCAR 2, and EuroNASCAR Club Challenge division respectively, although Ghirelli will not defend his title after he was promoted to the EuroNASCAR PRO class. Hendriks Motorsport will enter the season as the defending team's champion.