Is 2.1 m enough?

I am constructing a set of outward-opening timber ledge-and-brace doors for a workshop, through which *one day* someone may wish to take a car. Vehicle-storage is not the current intended use of the room, but I don't want to completely exclude that use for someone later down the track.

So my question is, **what is the narrowest door I can build that will still permit a car to pass through?** I'm happy to exclude large vehicles (SUVs and the like), because it's not a huge workshop anyway, it's got a low ceiling, and this is a pretty built-up urban area where most people have smallish cars.

I've read on forums that an average car width is 1.6–1.9 m; I've no data to back that up though.

Oh, and I want to make a narrow door because they'll be lighter and cheaper, and because I don't want to give up too much internal wall-space to the door (to reserve space for shelves etc.).

Thanks!