The 49-year-old actress played Talia al Ghul in the third instalment of Christopher Nolan's Batman trilogy The Dark Knight Rises. Her character was seen being chased through Gotham City before being killed off by Batman when her truck crashes and she uses her last breath to declare: "My father's work is done".
In an interview on TV show Les Rencontres du Papotin', Cotillard was asked: "You die quite implausibly, don't you?"
"I agree with you. I didn't nail that scene," she admitted. "I didn't find the right position. I didn't find the right way … I was stressed. Sometimes it happens that you screw something up. So that, I screwed up."
Cotillard previously said The Dark Knight Rises scene felt like a failure during an interview with Allociné, saying: "Sometimes there are failures, and when you see this on screen, you're thinking: 'Why? Why did they keep that take?'
"But either you blame everyone or nobody. But I thought people overreacted because it was tough to be identified just with this scene.
"When I'm doing the best I can to find the authenticity in every character that I'm playing, it's tough to be known just for this scene."
However, the French star insisted she wasn't going to take it to heart because "it's important to know how to laugh about this, and also, there are worse things in life".
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