As I understand it, it is mission impossible during weekday mornings and afternoons as one would expect.
What is it like during evenings during the week and on weekends. In particular those outside parking lots [I really don't like underground parking and I am guessing meter parking has a limited time frame.
Last time I went to downtown montreal about 3 or 4 years ago on a tuesday night it was hard enough finding parking at the last orange line metro station in Laval. And quite frankly if it is possible I'd rather just drive in.