Admittedly, I probably wouldn't have called it a particular favourite at the time either, but it has stuck with me nevertheless. I liked the combination of the post-apocalyptic setting and weirdly dreamlike atmosphere. Couldn't have identified what it was at the time, but in hindsight, I think it also stood out for how different in look and tone it was to your typical US productions of the time too.
I'd put a moderate amount of money on it being influenced by the sci-fi comics work of Moebius from the '70s.