How frequently a car should be serviced depends on the manufacturer's specifications and recommendations. The time frame therefore varies depending on the model and brand. Most car manufacturers recommend an inspection every 1 to 2 years or after every 15,000 to 30,000 kilometers driven.
For new vehicles, however, the first inspection may be recommended after 5,000 kilometers or after few months of driving. This ensures that the vehicle has no manufacturing defects and functions as expected by the driver.