Power units pushed to the max and reaching limits: Ferrari advantage as penalties loom. As the 2025 F1 season nears its end, power units are reaching their limits.

As the 2025 season approaches its final rounds, with only four Grands Prix left to close out Formula 1’s 75th year, all power units are reaching their limits. Many drivers could be forced to replace components, incurring grid penalties, with reliability concerns already emerging in Brazil. Let’s take a look at the situation for all drivers.

The final kilometers of the power unit

This season, at least among the top teams, reliability has reached truly impressive levels, minimizing damage and setbacks. Mercedes-powered drivers have suffered the most: Kimi Antonelli’s engine failed at Imola, Lando Norris’ unit broke down at Zandvoort, not to mention additional issues affecting Williams and Aston Martin.

In contrast, Ferrari and Honda have experienced very few engine complications. However, after 20 Grands Prix, all power units are starting to show the first signs of wear, bringing teams closer to mandatory replacements, which would trigger penalties for exceeding the fifth unit allowance.

Component situation: penalties in Brazil?

The three title contenders, along with Charles Leclerc and George Russell, have reached their fourth units of ICE, turbo, MGU-H, and MGU-K, and their second units of battery and control electronics. Any driver opting for a new component would face a 10-place grid penalty. Among the top drivers, only Lewis Hamilton and Kimi Antonelli can “smile,” as they have already served penalties and have an extra fresh power unit. Any further replacements for them would result in only a five-place drop.

According to some reports, many teams are targeting Brazil as the circuit to take penalties, given its overtaking opportunities. Las Vegas is excluded due to the proximity of walls, while Qatar is extremely difficult for passing.