December 18, 2025 | News | Formula Winter Series

Jenzer adds to its FWS line-up with Zasov and Borenstein

Jenzer Motorsport has confirmed the addition of Teodor Borenstein and Georgiy Zasov to its 2026 Formula Winter Series line-up.

Teodor Borenstein, from Czechia, will compete in the full Formula Winter Series season for a second consecutive year. In the 2025 season, he secured a best race result of 12th at Portimão. Borenstein’s season continued in the F4 CEZ series, where he scored two top-five finishes in the final four races of the season.

Borenstein will compete with Jenzer for the first time in the 2026 Formula Winter Series, and will be looking for top-ten finishes and further progression after his first full season in single seaters.

Swiss racer Georgiy Zasov will turn 15 just before new year, in time to make his first F4 starts in the Formula Winter Series. The talented youngster secured the 2025 Swiss OK Karting championship in October, represented Switzerland at the Rotax Grand Finals 2024, while also showing strong performances in WSK competition during the year. Zasov will race in FWS at Estoril, Valencia and Barcelona, while the driver of the car at Portimão and Motorland Aragon is to-be-determined.

Borenstein and Zasov join the already-announced Markas Silkunas and Levi Arn in the quartet of Jenzer entries. The 2026 Formula Winter Series will begin at the Circuito Estoril from January 22-25.