The IMSA Vintage Series 2025 Season 4 is currently ongoing with 81 drivers participating. In the Nissan GTP class, Audrius Valantiejus leads the championship with 41 points, while Davide Ricciardi has secured the top win with one victory. Meanwhile, in the Audi 90 GTO class, Joni Hagner holds the lead with 43 points and is also the top winner, having achieved one win. The competition remains tight as the season progresses.