The Car · Cadillac F1 · 2026 Debut

MAC-26

Cadillac's first Formula 1 car. A new chassis, a new aerodynamic philosophy, and a Ferrari power unit for the opening three seasons — before GM's own PU arrives in 2029.

Ferrari PU · 2026–2028 GM PU · 2029+ Silverstone · Charlotte · Warren
At A Glance

The 2026 Spec Sheet

F1's biggest regulation reset since 2014. Smaller, lighter cars; a 50/50 split between combustion and hybrid power; fully sustainable fuel; active aerodynamics. Every car on the grid is brand-new — and Cadillac is one of two completely new operations entering the championship.

Debut

2026

Australian GP · season opener

Min. Weight

768 kg

down 30 kg vs. 2025

Hybrid Split

50 / 50

ICE · electric power

Fuel

100%

sustainable, drop-in

Active Aero

X-Mode

straight-line · cornering

Spec values represent the FIA 2026 Power Unit and Chassis Technical Regulations. Cadillac-specific MAC-26 details — wheelbase, fuel cell volume, tire stagger — will be published as the team releases them; this page will update accordingly.
Powertrain

Ferrari Today · GM Tomorrow

Cadillac's PU strategy is a three-year bridge. Ferrari supplies the 2026-spec power unit for seasons 2026, 2027, and 2028 — long enough for GM to bring its own purpose-built F1 PU online for 2029. It's the same playbook McLaren used with Mercedes in the early hybrid era, with one difference: GM is paying to be its own customer and supplier.

Power Unit Roadmap

2026
Ferrari PU
2027
Ferrari PU
2028
Ferrari PU · last year
2029
GM PU · debut
2030
GM PU
Ferrari power unit (customer) GM power unit (works)
2026 Regulations

Why Every Car On The Grid Is New

2026 is F1's biggest reg reset in over a decade. Four headline changes drive the whole field's rebuild — and dictate the MAC-26's design priorities.

01

50/50 Hybrid Split

The MGU-K's electric output roughly triples vs. 2025. Combustion still makes around 540 kW, but the battery now contributes nearly the same — making efficient deployment as important as raw power.

02

Active Aerodynamics

Front and rear wings now reconfigure between low-drag "straight-line" mode and high-downforce "cornering" mode. Replaces DRS, and the override is driver-managed everywhere — not zone-limited.

03

Lighter, Smaller Cars

Minimum weight drops to 768 kg (from 798), wheelbase reduces, and overall width tightens. Smaller cars are nimbler in slow corners — and the weight cut hurts heavier drivers less than before.

04

100% Sustainable Fuel

Drop-in sustainable fuel — synthesized from biological waste or atmospheric CO₂ — replaces 2025's E10 blend. Same energy density, very different supply chain.

Built Where

A Three-Country Operation

Cadillac F1 is the first team to operate as a fully transatlantic build from day one. Chassis design in Silverstone, race operations and final assembly in Charlotte, GM technology integration in Warren.

Silverstone

Northants, UK

Chassis design, aerodynamics, wind tunnel work. Inherits the technical core of the former Andretti Cadillac F1 operation that established here in 2024.

Charlotte

Concord, NC, USA

Race-team HQ. Logistics, race operations, paddock support, and final assembly for the Americas-leg of the calendar. The hub closest to GM's NASCAR & IndyCar operations.

Warren

Michigan, USA

GM Global Technical Center. Power unit development for the 2029+ in-house PU program; corporate technology transfer; battery and software integration with the broader GM EV portfolio.

Who Runs It

Team Leadership

A blend of F1 veterans (Lowdon, Symonds, Chester) and senior GM executives (Reuss, Towriss). Each of these has an interview on The Garage page if you want to hear them speak directly.

Graeme Lowdon

Team Principal

Built Manor / Marussia F1 in the 2010s, then took over the Andretti Cadillac project in 2023. Day-to-day operational lead.

Dan Towriss

CEO · TWG Motorsports

Chief executive of the holding company financing Cadillac F1's parent organization. The dealmaker who closed the FIA entry.

Mark Reuss

President · General Motors

GM's senior-most racing advocate. Drove the F1 entry from inside GM and oversees the 2029 in-house PU program.

Pat Symonds

Chief Technical Officer (Advisory)

Williams & Benetton/Renault championship-era engineer. Joined the project from the FIA, where he wrote the 2022 regulations.

Nick Chester

Technical Director

Former Renault & Lotus F1 technical chief. Leads chassis engineering out of Silverstone.

Watch

Mark Reuss Reveals MAC-26 To Jay Leno

Mark Reuss walks Jay Leno through the MAC-26 — Cadillac's debut F1 chassis

Cadillac Returns To The World Stage

GM President Mark Reuss walks Jay through the MAC-26 in detail. Confirms the Ferrari power unit timeline, the GM-built PU for 2029, and the philosophy behind Cadillac's first F1 design.

Jay Leno's Garage · 28:45 · May 2026

More third-party Cadillac F1 video coverage on The Garage →