Unless you’ve done some major driving in muddy or dirty conditions, or you’ve run your new car through some fresh tar or had it get tree sap on it, you won’t need to get it detailed right away. For the first few months, washing and spot cleaning are usually sufficient to keep it looking new and pristine. That said, it’s easier and faster to detail a relatively clean car than it is to have to detail a car that’s been used as someone’s mobile dorm room, so the sooner you start detailing your new car, the easier and less expensive it will be in the long run.