McLaren Closes Mercedes Engine Knowledge Gap Ahead of Miami GP

McLaren team principal Andrea Stella announced the team has taken a “significant step forward” in grasping the intricacies of its Mercedes‑supplied power unit ahead of the Miami Grand Prix. The progress follows a shaky start to the 2026 season, including power‑unit failures in China, but a strong showing in Suzuka that hinted at the car’s potential.

Why it matters:

The power unit is now a 50:50 hybrid, so any gap in understanding can translate directly into lost performance. Closing that gap could help McLaren chase the 89‑point deficit to Mercedes and restore its status as a front‑runner.

The details:

• Early‑season setbacks: Both Lando Norris and Oscar Piastri retired in China due to power‑unit glitches.
• Suzuka turnaround: Piastri challenged Mercedes for the win and Norris finished fifth, showing the package can be competitive.
• Simulation upgrades: McLaren and Mercedes’ High‑Performance Powertrains (HPP) have refined offline and real‑time simulation tools, narrowing the knowledge gap present in Australia.
• New MCL40: Stella hinted at a “completely new” chassis for Miami, built around the updated engine map and regulation changes.
• Rule tweaks: Miami will see reduced qualifying recharge, a higher boost cap (+150 kW) and slower race‑start aids, all of which favor teams that can quickly adapt engine strategy.

What's next:

Stella says the team will rely on the improved simulation data to optimise power‑unit deployment under the new Miami regulations. If the MCL40 performs as expected, McLaren could narrow the gap to Mercedes and re‑ignite its championship aspirations.