Ahead of the Miami Grand Prix on Sunday, Ferrari driver Lewis Hamilton believes his team has found a fix for the lack of power that plagued him in Japan, where he finished sixth.

“In the last race, we were lacking power. We did a thorough investigation and found it wasn’t just the engine but the overall system, with several factors combining to cost us eight to nine tenths on straight-line power. We’ve addressed that, working on the simulator and at the factory. I feel very ready for the weekend,” said Hamilton. However, he knows that the month-long break would have benefited their rivals too. “There’s a power gap between Mercedes and us.  To close that gap, we’ve  to develop [our engine] twice as much as them,” he added.