Scheduled car maintenance involves routine checks and services to ensure your vehicle's optimal performance and longevity. These services typically include oil changes, tune-ups (spark plugs, filters, and fluids), tire rotations, filter replacements, fluid checks and top-ups, and inspections of various components. Following a maintenance schedule, often based on mileage milestones like the 30-60-90k schedule, helps prevent costly repairs and keeps your car running smoothly.