Mercedes-Benz Service A is the service needed every 10,000 miles or 12-months, whichever comes first. This service may also depend on the specific Mercedes-Benz model or how often or far you travel. Service A includes the following car maintenance routines: Synthetic Motor Oil Replacement Oil Filter Replacement All Fluid Level Checks & Corrections Are Dependent On factory-recommended Service Intervals For Your Vehicle’s Year & Model Tire Inflation Check & Correction Brake Component Inspection Reset Maintenance Counter