An important step has been taken in the energy recovery system, with the power unit estimated to have less space. According to these two sources, a total of 12 hp increased with the new power unit.
In addition, the new power unit is much more efficient than 2018 and therefore consumes less fuel. In the new season, the drivers will be allowed to use 5 kg more fuel. However, Mercedes can consume less fuel because it consumes less fuel.
Lastly, the Malaysian oil and oil partner of Mercedes, Petronas, seems to have played a key role in the new German power unit.
Petronas has developed an oil that contributes to performance improvement. This new oil causes less friction in the engine and the engine can produce more power.
At the end of last year, Toto Wolff said they were experiencing a breakdown in the 2019 engine.