Here's what he said
Fernando Alonso wrote:“It’s a step forward in every aspect of the car. I think the car has more grip, the car is less draggy on the straights, and the engine is a bigger step better as well,” Alonso said.
“Overall, as a package, I think the car is on the right direction.
“Obviously we saw in the first two races there is still another step to do if you want to compete with the top three teams, but as a first step I think, hopefully consolidate as the fourth [fastest] team or lead the midfield together with Haas.
“That’s the target. I felt that on the car as well.”