The midfielder believes his side were unlucky to lose out on away goals in last season's Champions League tie but is confident the team have greatly improved this term
The French champions were knocked out at the quarter-final stage on away goals by Barcelona last year after a strike from Pedro at Camp Nou prevented les Parisiens from a famous win.
And having produced dominant displays in both the group stage and last-16 tie with Bayer Leverkusen, Motta is confident Laurent Blanc's side capable of challenging for the last four as they prepare to take on Chelsea.
"When you're eliminated, it leaves a bitter taste in the mouth. I think we did a good job but in the end we were eliminated thanks to the goal from Pedro," he told BeIn Sport.
"This year we will try to do better than last time. We've changed a little bit. We've changed players, our game and our style of play. The team feels a little more confidence with how we play now.
"We're confident we're doing a good job. Things have certainly improved, we know that."
The first leg takes place at Parc des Princes on Wednesday.