The 2026 regulations have been talked about for two years, and now we finally have running cars. Here’s a clean-headed look at what really changed and what stayed the same.

Power unit#

This is where the real revolution happened. The internal combustion engine has been heavily simplified — no MGU-H anymore, which was always the most complex and expensive component. The MGU-K is now responsible for nearly 50% of total power output, up from about 20% under 2014–2025 rules.

What this means in practice:

  • Active aerodynamics are now mandatory because the cars can’t hit straight-line targets without DRS-style systems on every straight
  • 100% sustainable fuel is required, which actually has a noticeable effect on combustion characteristics
  • Engines are physically smaller and lighter

Chassis#

Minimum weight reduced by 30 kg compared to 2025. That’s a huge target and most teams missed it during winter testing. Williams was the only team that hit the minimum on first day of running.

The aerodynamic philosophy is still ground effect, but the floor is significantly less aggressive. The intent was to reduce porpoising and let teams design for racing rather than peak downforce.

Movable aero#

DRS is gone. Replaced by an “active aero” system on the front and rear wings that can flatten on straights and reload in corners. The driver still controls activation but the FIA can now control it via geofence — opening on certain straights only.

Did it work?#

Too early to say. Bahrain and Jeddah suggested racing is roughly the same — same teams up front, same DRS-train issues, same aerodynamic dirty air problem. The first season under any new regs is always messy. Wait until 2027 to judge.

What I’m watching#

Whether Honda’s new collaboration (now Aston Martin) brings them up the grid. Whether Audi’s first season as a works manufacturer becomes a development success or another Toyota-style learning curve. Whether Ferrari finally fixes the clutch issues.