The electric motor can siphon power from the V6 to recharge the battery (a process called super clipping), but any power that goes that route can’t drive the rear wheels, which could create dangerous speed differentials on track, we were told.
Sadly, those warnings proved mostly correct, as was all too clear at the Japanese Grand Prix in March. Refreshingly, there appears to be no defensiveness on the part of the FIA or other stakeholders but rather a desire to respond to the complaints.
2027
The FIA, the teams, the power unit manufacturers, and F1 Management (which controls the commercial side) have agreed—although technically only on principle so far—that for next year, the V6 will become more powerful by 50 kW (67 hp) and the electric motor will be able to deploy 50 kW less, rebalancing the power split to 450 kW (603 hp) from the V6 and 300 kW (402 hp) from the motor-generator unit. The increase in V6 power will be achieved by increasing the engine’s fuel flow.
With less electrical power to deploy, the cars should maintain a higher state of charge throughout a lap. And if the power unit does require some super clipping, the additional V6 output leaves more power available to keep the car driving, reducing those speed differentials. Some other changes are apparently still in discussion. The amount that the electric motor can harvest from the V6 could increase above 350 kW, and the battery capacity could be increased from 4 MJ to 5 MJ.
There are still tradeoffs, though. Absent all of the synthetic fuel partners finding an extra 10 percent energy density in their fuels in the next few months, more powerful V6s with greater fuel flow will either need larger fuel tanks or shorter races. Larger fuel tanks would be preferable; if the races are shorter, everyone from F1TV subscribers to team sponsors might start wondering where their 10 percent refund is. But a larger fuel tank means a redesigned chassis that will now also be bigger and heavier—a trend the 2026 rules finally managed to reverse.