After Charles Leclerc clipped the retaining wall on the exit of Monoracha at Monza, the Ferrari engine intended for the Spanish GP will skip the race.
Engine Scrutiny After Monza Crash
The 067/6 unit, fitted with the second regulatory‑approved modification package, was deemed mechanically sound after initial external inspections showed no cracks or breakages. Nevertheless, Ferrari’s technical team ordered a comprehensive X‑ray survey to search for micro‑damage that could compromise the engine’s integrity over the rest of the season.
Madrid Circuit Altitude and the ADUO2 Decision
Madrid’s street circuit rises 667 metres above sea level—roughly the same altitude as the Red Bull Ring. At that height the turbo‑compressor integral to the ADUO2 package could deliver a small but valuable thrust advantage in the thinner air. To maximise reliability, Ferrari selected Leclerc’s power unit for the Spanish GP from the standard ADUO1 line, while keeping the ADUO2 package in reserve.
Strategic Choices for Leclerc and Hamilton
Ferrari will give Lewis Hamilton, who is slated to race unchanged, an ADUO2 unit for the weekend. Leclerc, however, will run an ADUO1 for the pre‑race sessions, allowing the pit crew to collect data on the performance gap between the two power‑unit configurations. The forthcoming practice and qualifying sessions will be decisive in determining which unit to use when the Spanish GP commences.
Aerodynamic and Energy Dynamics
Madrid demands a balance of medium to high downforce as its asphalt offers limited grip. Ferrari may re‑enable the additional flaps on the movable wings to increase braking efficiency, which is crucial on the circuit’s 22 corners. Because the track provides more opportunities to recharge the battery than Monza, the Ferrari engine’s power deficit relative to the Mercedes V6 becomes a smaller concern.
Next Steps and Championship Implications
If the ADUO1 package fails to deliver sufficient power, Ferrari can activate an ADUO2 from its reserve pool, accepting the penalty for a fifth engine change while preserving Leclerc’s title prospects. The decision will hinge on data gathered during Friday’s practice and the final lap times in qualifying.

