The Italian team, who launched their 2013 car yesterday, have not won a title since 2007.
The Brazilian driver told reporters at the launch: "I've some feelings that were not very positive in a few years, to see the car for the first time. Other years, it was very positive.
"I have to say that this is a very positive feeling. Maybe it's just my personal feeling but I think it was nice to see the car.
"The car is much more prepared. You have some interesting details around the car that can work, that can be nice on the track. Let's wait and see how everything's going to be on the track but the feeling is really 100% in the right direction."
Massa will drive the car at the first testing event of the season at Jerez next week.