The 2023 NASCAR Whelen Euro Series was the fifteenth Racecar Euro Series season, and the eleventh under the NASCAR Whelen Euro Series branding. The season started on 6 May with the Valencia NASCAR Fest at Circuit Ricardo Tormo and ended on 15 October with the EuroNASCAR Finals at Circuit Zolder.

Alon Day and Liam Hezemans did not defend their championship titles in the EuroNASCAR PRO and EuroNASCAR 2 divisions respectively, making it the first season since 2015 where neither of the reigning champion competed in the season that followed. Gianmarco Ercoli, who scored three victories in 2023, secured his first EuroNASCAR PRO championship title after he finished fourth in the final race at Zolder. Ercoli became the first driver to win the championship title in both divisions as he had already previously won the EuroNASCAR 2 title in the aforementioned 2015 season.

The championship battle did see some controversy as SpeedHouse Racing's owner-driver Lucas Lasserre, who entered the final race as the championship leader, had a late collision with Gianmarco's younger brother Mario Ercoli. It was later announced that the collision had no effect on the final standings because Lasserre was hit with a post-race penalty for start procedure infringements. Lasserre managed to finish second regardless with two victories, securing his best championship finish in the NASCAR sanctioned years of EuroNASCAR. Vittorio Ghirelli finished third after scoring two victories, one a piece in Vallelunga and Most. Anthony Kumpen was fourth in his first full-season campaign since 2017 ahead of Hezemans, who won the season opening race at Valencia. Tobias Dauenhauer and Paul Jouffreau took two race wins each, with the latter becoming the youngest race winner in EuroNASCAR PRO at the age of 19.

Jouffreau was also crowned as the EuroNASCAR 2 champion after winning the final race, giving him enough points to overhaul long-time season leader Vladimiros Tziortzis. Jouffreau had three wins compared to Tziortzis' five, but the Frenchman finished every single race inside the top-10 while Tziortzis had three results where he was classified outside of the top-10. Gil Linster finished third after securing his first victory of his career at Zolder. He was followed by Patrick Schober, who also took his first career victory at Oschersleben, and 2021 champion . Italian YouTuber Alberto Naska scored two victories, but a disastrous final races of the season resulted in him only finishing sixth in the standings.

Hendriks' four-year streak in the Team's Championship was stopped by RDV Competition, who claimed their second Team's title with the No. 3 team of Jouffreau and Frédéric Gabillon. CAAL Racing's No. 54 team, driven by Ercoli and Naska, finished second while Hendriks was third with the No. 50 team of Hezemans and Linster.

Teams and drivers NASCAR Whelen Euro Series released a provisional 31-car entry list for the teams participating on 5 April 2023.

EuroNASCAR PRO Team Body Style Race Driver Rounds Academy Motorsport 1 Ford Mustang Advait Deodhar 1–3 Michaela Dorcikova 4 5 EuroNASCAR FJ 2020 Vladimiros Tziortzis All RDV Competition 3 Ford Mustang Frédéric Gabillon 1–2 Paul Jouffreau 3–6 Panasport 4 Chevrolet Camaro Yannick Panagiotis 3 Hendriks Motorsport 7 Ford Mustang All 50 Toyota Camry Liam Hezemans All Vict Motorsport 8 Chevrolet Camaro Dario Caso 1, 3–6 9 Simone Laureti 1, 3 Mario Ercoli 6 SpeedHouse Racing 14 Ford Mustang Ulysse Delsaux All 40 Néo Lambert 1–4, 6 64 Lucas Lasserre All Race Art Technology 18 Ford Mustang Giorgio Maggi All 34 Chevrolet Camaro Thomas Toffel All PK Carsport 24 Chevrolet Camaro Anthony Kumpen All Double V Racing 27 Ford Mustang Stefano Attianese 1–3 3F Racing 30 Chevrolet Camaro Ryan Vargas 5–6 Double T 38 Chevrolet Camaro Cesare Balistreri 3 Marko Stipp Motorsport 46 Chevrolet Camaro Thomas Krasonis All 48 Miguel Gomes 1 Yevgen Sokolovskiy 2, 6 Tuomas Pöntinen 3, 5 Jack Davidson 4 CAAL Racing 54 Chevrolet Camaro Gianmarco Ercoli All 56 Marc Goossens 1–3, 5–6 88 Max Lanza 1–5 The Club Motorsport 55 Chevrolet Camaro Fabrizio Armetta All 65 Riccardo Romagnoli All Racingfuel Motorsport 58 Chevrolet Camaro Christoph Lenz 1, 3 Matthew Ellis 2 94 Alina Loibnegger 1–3 Team Bleekemolen 66 Chevrolet Camaro Thomas Dombrowski 1–2, 5–6 69 Ford Mustang Sebastiaan Bleekemolen All 72 Chevrolet Camaro Toyota Camry Vittorio Ghirelli All Team Japan Needs24 74 Toyota Camry Kenko Miura 1 Uber Modern Racing 75 Chevrolet Camaro Hugo Fleury 3, 6 Bulgarian Team 90 Chevrolet Camaro Michaela Dorcikova 1 Bremotion 99 Chevrolet Camaro Tobias Dauenhauer 2–6

EuroNASCAR 2 Team Body Style Race Driver Rounds Academy Motorsport 1 Ford Mustang Max Mason 2–3 Stefani Mogorović 4 Federico Monti 6 5 EuroNASCAR FJ 2020 Vladimiros Tziortzis All RDV Competition 3 Ford Mustang Paul Jouffreau All Panasport 4 Chevrolet Camaro Olivier Panagiotis 3 Hendriks Motorsport 7 Ford Mustang All 50 Toyota Camry Gil Linster All Vict Motorsport 8 Chevrolet Camaro Paolo Valeri 1, 3–4, 6 Mario Ercoli 5 9 Dario Caso 1 Valerio Marzi 3–4 Mario Ercoli 6 SpeedHouse Racing 14 Ford Mustang Arianna Casoli All 40 Matthias Hauer 1–2, 4–6 Igor Sicuro 3 64 Eric Quintal 1, 3–6 Igor Sicuro 2 Race Art Technology 18 Ford Mustang Claudio Remigio Cappelli All 34 Chevrolet Camaro Thomas Toffel All Double V Racing 27 Ford Mustang Patrick Schober All Double T 38 Chevrolet Camaro Cesare Balistreri 3 Marko Stipp Motorsport 46 Chevrolet Camaro Nick Schneider 1–5 Nick Strickler 6 48 Jack Davidson All CAAL Racing 54 Chevrolet Camaro Alberto "Naska" Fontana All 56 Sven van Laere All 88 Roberto Benedetti All The Club Motorsport 55 Chevrolet Camaro Fabrizio Armetta 1, 6 Victor Neumann 2 65 Riccardo Romagnoli All Racingfuel Motorsport 58 Chevrolet Camaro Max Mason 1 94 Nick Strickler 1–3 Team Bleekemolen 66 Chevrolet Camaro Thomas Dombrowski All 69 Ford Mustang Melvin de Groot 2–6 72 Chevrolet Camaro Toyota Camry Michael Bleekemolen All Team Japan Needs24 74 Toyota Camry Kenko Miura 1 Uber Modern Racing 75 Chevrolet Camaro Olivier Bec 3, 6 Bremotion 99 Chevrolet Camaro Gordon Barnes 2 Alina Loibnegger 4 Dominique Schaak 5 Eric de Doncker 6

EuroNASCAR Club Challenge Team Body Style Race DriverRounds Academy Motorsport 1 Ford Mustang Federico Monti All 5 EuroNASCAR FJ 2020 Vladimiros Tziortzis 4–5 RDV Competition 4 Chevrolet Camaro Yann Schar 1 74 Toyota Camry Frédéric Rouvière 5 Vict Motorsport 8 Chevrolet Camaro Mario Ercoli 4 SpeedHouse 14 Ford Mustang Arianna Casoli All 40 Alain Mosqueron All 64 Florian Richard All Race Art Technology 18 Ford Mustang Giorgio Maggi 4–5 34 Chevrolet Camaro Edouard Fatio All PK Carsport 24 Chevrolet Camaro Anthony Kumpen 2, 4–5 Double V Racing 27 Ford Mustang Viktor Schiffer All 3F Racing 30 Chevrolet Camaro Ryan Vargas 4–5 Marko Stipp Motorsport 46 Chevrolet Camaro Gordon Barnes 2–5 48 Gordon Barnes 1 Jack Davidson 2, 5 CAAL Racing 54 Chevrolet Camaro Gianmarco Ercoli 4–5 Alberto "Naska" Fontana 4–5 56 Marc Goossens 4 Sven van Laere 4–5 88 Max Lanza 4 Roberto Benedetti 4 Reza Sardeha 5 Team Bleekemolen 66 Chevrolet Camaro Thomas Dombrowski 3–5 69 Ford Mustang Sebastiaan Bleekemolen 3–5 Melvin de Groot 5 72 Toyota Camry Vittorio Ghirelli 3–5 Michael Bleekemolen 5 Team Japan Needs24 74 Toyota Camry Kenko Miura 1 Uber Modern Racing 75 Chevrolet Camaro Hugo Fleury 2, 5 Olivier Bec 2, 5 Racingfuel Motorsport 94 Chevrolet Camaro Loris Cencetti 2 Bremotion 99 Chevrolet Camaro Constantin Schöll 5

Confirmed changes Drivers On 5 October 2022, former two-time series champion Anthony Kumpen announced to Autosport.be that he will be returning to the series on a full-time basis in 2023, having previously made his return to the NASCAR Whelen Euro Series during last year's round at Circuit Zolder. It is scheduled to be Kumpen's first full-time season since 2017 and his first planned full-time season participation since 2018, which he was unable to complete after he was suspended for four years by the Royal Automobile Club of Belgium for failing a drug test during the 2018 24 Hours of Zolder. The announcement of the provisional Entry List on 4 April 2023 confirmed that Kumpen will be replacing Alon Day as PK Carsport's sole full-time driver in EuroNASCAR PRO. Day's status for 2023 is currently unknown. On 10 October 2022, Thomas Krasonis announced that he would be leaving the series to compete in the United States in 2023. Krasonis is currently scheduled to make his ARCA Menards Series and NASCAR Craftsman Truck Series debut in 2023 for a currently unannounced team. On 28 October 2022, just after the conclusion of the 2022 EuroNASCAR Club Challenge season, Néo Lambert announced his plans to compete in the EuroNASCAR 2 season with SpeedHouse for 2023. It was subsequently revealed on 28 April 2023 that Lambert will be racing in EuroNASCAR PRO instead of EuroNASCAR 2, where he is due to race the No. 40 Ford Mustang. On 5 December 2022, it was announced that Vladimiros Tziortzis will be stepping up to the EuroNASCAR PRO class for 2023. Tziortzis will become the new EuroNASCAR PRO driver of Academy's No. 5 team, replacing Patrick Lemarié whose status for 2023 is currently unknown. On 15 December 2022, Double T Racing announced that Leonardo Colavita and Double T Racing will be leaving NASCAR Whelen Euro Series to join the Italian GT Championship's GT Cup class in 2023. On 16 February 2023, it was announced that Australian driver Max Mason will be joining the EuroNASCAR 2 championship in 2023. It was subsequently announced on 21 March 2023 that Mason will be joining Racingfuel Motorsport as the full-time driver of the No. 58 Chevrolet in 2023. He will be joined by American driver Nick Strickler, who is set to compete with the No. 94 Chevrolet in 2023. On 9 March 2023, it was announced that reigning EuroNASCAR 2 champion Liam Hezemans will be moving up to the EuroNASCAR PRO division for a full-time switch in 2023. Liam previously competed double duty on both EuroNASCAR PRO and EuroNASCAR 2 in 2022. On 15 March 2023, Marko Stipp Motorsport announced that the team has signed German-Brazilian driver Nick Schneider for the 2023 season. Schneider, who competed in the DMV BMW 318ti Cup last year under a Brazilian racing license, is set to compete in the EuroNASCAR 2 division. On 24 March 2023, it was announced that Alberto Naska will be driving CAAL Racing's No. 54 team for the 2023 season. Naska competed with CAAL's No. 88 team in 2022. On 25 March 2023, it was announced that Paul Jouffreau will be switching teams to RDV Competition despite having a two-year contract with SpeedHouse. Jouffreau will be replacing Ulysse Delsaux as RDV's new EuroNASCAR 2 driver. Delsaux himself will be moving to SpeedHouse Racing, with the former EuroNASCAR 2 champion being set to replace Alexander Graff as the EuroNASCAR PRO class driver of the No. 64 team. On 27 March 2023, it was announced that Marc Goossens will be returning to CAAL Racing after spending a season with SpeedHouse. Goossens will be joined by Sven van Laere, who is set to make his first full-season campaign in EuroNASCAR after making his debut at Circuit Zolder in 2019. On 29 March 2023, it was announced that Alina Loibnegger is set to compete in EuroNASCAR PRO with Racingfuel Motorsport after two seasons of competition in the EuroNASCAR 2 division. On 8 April 2023, it was announced that Gil Linster will be switching teams to Hendriks Motorsport. Linster is set to partner Liam Hezemans in the No. 50 Toyota Camry team, which will carry sponsorship from Chinese cryptocurrency company Binance. On 9 April 2023, Marko Stipp Motorsport announced that the team has signed Greek driver Thomas Krasonis as one of their drivers in the EuroNASCAR PRO division for the 2023 season. On 13 April 2023, it was announced that Kenko Miura will be making his full-time return in EuroNASCAR as an owner-driver for Team Japan Needs24.