Traditionally, a fleet manager had to guess how long repairs were going to take based on arbitrary milestones, like when a vehicle entered the shop, when the repair is finished and when it was returned to the driver – if they could even determine when these things happened. It’s a long-accepted standard practice, but it’s less than ideal. What this guesstimate doesn’t do is account for the amount of time a vehicle may sit on the lot waiting to be serviced or waiting for pickup after the repair was completed.