After the introduction of the
Tatuus MSV GB3-025 in 2025, 2026 saw another aerodynamic upgrade to the chassis package. The
Mountune engine, previously a two-litre unit, was upgraded to a 2.4-litre engine, thereby providing a 25% torque increase. All cars run on
Pirelli tyres.
Team changes Arden Motorsport returned to GB3 after a one-year absence, while Nitrous Competitions ADM Racing, a cooperation between
British Superbike Championship team Nitrous Competitions and
GB4 team ADM Racing, entered GB3, initially running a single car.
Chris Dittmann Racing, who had entered every season since 2013,
JHR Developments, a series mainstay ever since the 2022 season, and Argenti with
Prema, who had joined the series in 2025, all did not announce any drivers ahead of the season.
Driver changes Rodin Motorsport signed two new drivers after they promoted reigning champion
Alex Ninovic to their newly formed
Formula Regional European Championship outfit and
Gianmarco Pradel joined
MP Motorsport in
Eurocup-3.
Maxim Rehm joined the team for his full-season debut after a race-winning guest drive for Hillspeed in the final round of 2025, together with
Martin Molnár, who steps up from
British F4 after coming third in 2025 with
Virtuosi Racing.
Nikita Johnson and
Keanu Al Azhari left
Hitech as Johnson competed in
Indy NXT with
Cape Motorsports Powered by
ECR and Al Azhari joined Hitech's Eurocup-3 outfit. The team signed
British F4 graduate Yuhao Fu, who came 25th in 2025 driving for Xcel Motorsport.
Noah Lisle was originally signed to be the third driver for
Hitech after coming 7th in
2025, but later withdrew for personal reasons. His replacement was announced to be
Jin Nakamura, who embarks on a part-time campaign alongside his main
FIA Formula 3 campaign with the team. Xcel Motorsport entered 2026 with an all-new driver lineup after 2025 runner-up
Patrick Heuzenroeder departed the series to join
Campos Racing in
Eurocup-3 and neither
Jack Sherwood nor any of the team's three part-time drivers returned. Xcel signed Rowan Campbell-Pilling, who steps up from British F4 after coming tenth in 2025 driving for
JHR Developments, hired Ricardo Baptista, who graduates to GB3 from
Brazilian Formula 4, where he finished the 2025 season in tenth, and saw
Lucas Fluxá move over from Hillspeed after finishing the 2025 GB3 season in eighth.
Hillspeed also have an all-new, all-rookie lineup after none of their eight part-time competitors returned to the team. All three of its drivers stepped up from Formula 4, with
Aurelia Nobels departing
F1 Academy after coming 13th in 2025 with
ART Grand Prix, Dante Vinci graduating from
Italian F4 after finishing the 2025 season in 21st driving for
Van Amersfoort Racing, and Peter Bouzinelos returning to racing after a year on the sidelines following a bicycling accident.
Noah Lisle and
Kai Daryanani both left
JHR Developments, with Lisle joining
Hitech and Daryanani moving to FREC with
Trident. None of the teams' other part-time drivers returned to GB3.
Reza Seewooruthun departed Argenti with
Prema, as he will compete in FREC with Rodin Motorsport. None of the teams' other part-time drivers returned to GB3.
Bianca Bustamante left
Elite Motorsport to join
Palou Motorsport in
Eurocup-3, while
William Macintyre stepped away from racing to focus on his cancer recovery . The team signed
Genesis Magma Racing's Trajectory Program driver Kyuho Lee, who finished 22nd with Rodin Motorsport in
Spanish F4 in 2025.
Kirill Kutskov completed the team's lineup for the first round of the season on his step up from Formula 4.
VRD Racing have an all-new line up, with
Hugo Schwarze leaving midway through 2025 to compete in the
European Le Mans Series in the
LMGT3 class with
R-ace GP and
Enzo Tarnvanichkul focusing on his Eurocup-3 campaign with
Campos Racing. After joining the team for the second half of 2026, siblings Patricio and Rodrigo González rejoined the team for the full 2026 season, and
Nikita Bedrin joined the team for his GB3 debut after finishing the
2025 FRECA season in eleventh with
Saintéloc Racing.
Fortec Motorsport saw
Stefan Bostandjiev join
Hitech in Eurocup-3. To replace him, the team signed
Alexandros Kattoulas, who graduated from GB4 after finishing the 2025 season fourth driving for Elite Motorsport. The team also promoted Jack Taylor from their GB4 outfit, with whom he came tenth in 2025. Returning team
Arden Motorsport fielded karting champion Lewis Gilbert on his jump up to GB3 and promoted Leon Wilson from their
GB4 outfit, with whom he came seventh in 2025. == Race calendar ==