2011 Dodge Avenger diesel repairs

How long those it take to fix a car that has disesel

This can’t be answered by anyone but the shop that is doing the repair . Only they know what is being done , how soon they can get to it and time required to get parts.

What is the nature of your question?

I assume you have a Dodge Avenger with a gasoline powered engine, yet somebody filled the tank with diesel by mistake, and now the engine won’t start . . . correct?