If your car is in the shop for more than a few days, you may start to wonder if the repair process is taking too long. Of course, there are a number of factors that can affect how long it takes to fix a car, including the severity of the problem and the availability of parts. In general, however, most repairs should be able to be completed within a week. If your car has been in the shop for longer than this, you may want to check in with the mechanic to see what the status of the repairs is.