Most modern cars only need a service once a year so it is important that the correct service schedules and lubricants are adhered to. Older cars may require a service more often.. This is why your vehicle should have at least the industry standard service at least once a year, irrelevant of mileage. The type of service you need will also be affected by how you use your car. For example, lots of short journeys where the engine does not have a chance to warm up properly will probably mean more frequent oil and filter changes.