The frequency of washing your car depends on various factors such as your location, weather conditions, and how often you use your car. As a general rule of thumb, it is recommended to wash your car every two weeks to remove dirt, grime, and other contaminants that can damage your car's paint over time. However, if you live in an area with harsh weather conditions, such as salted roads or heavy rainfall, you may need to wash your car more frequently to prevent damage. Ultimately, it's up to you to determine how often you want to wash your car, but regular washing is essential to keep your car looking its best and protecting its resale value.