Yes it has a similar adolescent exuberance about it. A sort of carefree joyfulness despite the distinctly dark side present in both movies. I love both films, just discovered Pierrot Le Fou , watched it twice in quick succession and could easily watch it again right now. It really struck a chord somewhere. It's mad, it's silly, it's flawed but it's just so enjoyable! And the chemistry between Karina and Belmondo is wonderful. Great film. Likewise BADLANDS, one of my all time top three.
This film also made me think of another Belmondo film, that one by Truffaut, with Catherine Deneuve, which was Mississippi Mermaid. Actually only the last third or half, where they also were on the run.
I agree with the person who also referred to Antonioni's The Passenger. Similar to be sure.