Cadillac's Formula 1 team encountered significant challenges at the Chinese Grand Prix, including aerodynamic deficiencies and a persistent fuel pump problem that sidelined Sergio Perez during sprint qualifying. Valtteri Bottas highlighted the car's lack of rear downforce as a key limitation, while the team works to address ongoing technical hurdles. These issues underscore the new outfit's integration difficulties in the 2026 season.
Cadillac entered the 2026 Formula 1 season as a newcomer, with its entry secured just 12 months prior, facing both political and practical obstacles to reach the grid. At the season-opening Australian Grand Prix, both cars qualified over four seconds off pole position, a notable achievement given the team's rushed development of the MAC-26 chassis.
Heading into the Chinese Grand Prix at Shanghai, Cadillac continued to grapple with performance gaps. During Friday practice, Sergio Perez managed only 13 laps due to a fuel pump issue, which prevented him from participating in sprint qualifying. "Unfortunately, we've been struggling in that area already for a long time, far too long," Perez said. "We haven't been able to solve it, and it's been already a lot of times that we've been with that issue." Similar fuel system troubles had affected the team in Melbourne and taken out Valtteri Bottas during the Australian race.
Bottas, who qualified 21st and last for the sprint—over 1.8 seconds behind the leading Aston Martin—faced a significant deployment issue, describing the session as "a bit of a waste." He emphasized aerodynamic shortcomings over power unit concerns: "The power unit is decent... It's definitely our car. Especially on the aero side, we're lacking quite a lot of load, especially on the rear end of the car."
Cadillac's chief technical officer Nick Chester acknowledged the difficulties: "At this early stage in our journey we are still finding issues and fixing them in real time." The team's basic rear-end aerodynamics, a result of tight production timelines, limits setup options and exacerbates energy management challenges. Unlike rivals focusing on power unit optimization, Cadillac prioritizes generating efficient downforce to improve balance, tyre wear, and energy harvesting—interlinked factors critical under the new regulations.
Perez expressed hope for a fix ahead of the sprint, noting the team's efforts. Cadillac aims to leverage its Ferrari power unit more effectively as it addresses these foundational issues.
