Every car will need a service at some point. The service schedule is decided at the factory and it can vary from manufacture to manufacture and depending on the model of car. IT is very important to have services carried out in accordance with the schedule in order to keep your car running in tip top condition.
You have the choice as to whether to take it to a main dealer (same manufacture as the car) or to take it to another garage of your choice. Many people opt to use a local garage as main dealer prices are often quite a bit higher than local garages. If your car is still within the manufactures warranty then you may have to have any services done at the main dealer to keep the warranty and stop it from becoming void or ensure that where you take the car for the service, uses genuine parts.
Having full main dealer service history can also add value to your car when you come to sell it, so if you want to look after the resale value then main dealer servicing is the way to go. If you cannot afford this then local garage services are often just as good and will ensure that the car is looked after.