When considering whether a question is worth closing, StackExchange provides the option of "too localized". This is described as:
This question would only be relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet.
I think that in general this site will not need to worry about any questions being tied to a small geographic area, or being too time-sensitive. However, due to the many makes, models and years of vehicles, and the numerous specific parts there may be issues with, someone could easily see an otherwise good question as being "extraordinarily narrow".
Perhaps this is a close reason that should either be strongly discouraged for this site, or perhaps something that needs to be defined better to suit this environment. What are some ways that we can handle this issue - or is it not really an issue at all?