There is no such thing as an average time to settle an automobile accident claim because numerous factors influence how long it takes to calculate and settle a claim. Obviously, each automobile accident is unique, and the length of time it takes to settle an auto accident lawsuit varies depending on the specifics and facts of the case. An automobile accident case can take anywhere from a few weeks to several months (or years) to resolve. There is a lot to look at on both sides, and if you have serious injuries and or property damage, the settlement process can take even longer than the standard timeline.