It's clear that the engine is back to being the king in F1 and Mercedes has benefited the most by the change in regulations last year. In the mean the rest of the manufacturers are all playing catch up. Ferrari has clearly improved their engine during the winter break and with two major upgrades coming in season, they seem to be the best of the rest. Renault on the other hand, seem to have been left behind as they have admitted. Still, one should expect them to fight. Last but not least, Mclaren, who have adopted a similar philosophy to Mercedes, have not yet been able to show the true power of their engine. Running in safe mode meant that they would protect the engine and its components from failure but would produce much less bhp ( at least 80). Which of the three seemingly weaker engines do you think has the most potential?