A motor vehicle service or tune-up is a series of maintenance procedures carried out at a set time interval or after the vehicle has travelled a certain distance. The service intervals are specified by the vehicle manufacturer in a service schedule and some modern cars display the due date for the next service electronically on the instrument panel. A tune-up should not be confused with engine tuning, which is the modifying of an engine to perform better than the original specification, rather than using maintenance to keep the engine running as it should. The completed services are usually recorded in a service book which is rubber-stamped by the service centre upon completion of each service. A complete service history usually adds to the resale value of a vehicle.

The actual schedule of car maintenance varies depending on the year, make, and model of a car, its driving conditions and driver behaviour. Car makers recommend the so-called extreme or the ideal service schedule based on impact parameters such as

1. Number of trips and distance travelled per trip per day
2. Extreme hot or cold climate conditions
3. Mountainous, dusty or de-iced roads
4. Heavy stop-and-go vs. long-distance cruising
5. Towing a trailer or other heavy load