Where Google Maps has a dedicated way of providing corrections, you can get things fixed quickly.
Where it doesn’t, and you have to use a more generic feedback form, my experience is that it never gets corrected. Zero times out of perhaps a dozen that I’ve tried, for several different types of errors (misplaced town markers, a missing consonant in the Bengali spelling of a road name, can’t remember what else off the top of my head). I just don’t bother now. Most seem to get fixed some years down the line, probably incidentally as part of some other more generic data or processing algorithm update. The only time I’ve had any sort of prompt success was when I reported something on a Google Maps-related HN thread: https://news.ycombinator.com/item?id=23367961. The fix in that instance was evidently done as a one-off exception, but looking at a few places in Google Maps now, I think the underlying systemic issue is finally fixed (for now).
Where it doesn’t, and you have to use a more generic feedback form, my experience is that it never gets corrected. Zero times out of perhaps a dozen that I’ve tried, for several different types of errors (misplaced town markers, a missing consonant in the Bengali spelling of a road name, can’t remember what else off the top of my head). I just don’t bother now. Most seem to get fixed some years down the line, probably incidentally as part of some other more generic data or processing algorithm update. The only time I’ve had any sort of prompt success was when I reported something on a Google Maps-related HN thread: https://news.ycombinator.com/item?id=23367961. The fix in that instance was evidently done as a one-off exception, but looking at a few places in Google Maps now, I think the underlying systemic issue is finally fixed (for now).