What is the most efficient way to clean the interior of an Audi A2?

I just bought a used Audi A2 and I want to make sure the interior stays in good condition. What is the best way to clean the upholstery, dashboard, and other interior surfaces without damaging them?

Start by vacuuming the interior to remove any loose dirt and debris. To clean fabric upholstery, mix a small amount of mild detergent with warm water and use a soft brush or cloth to gently scrub the surface. For leather upholstery, use a specialized leather cleaner and conditioner. To clean the dashboard, use a microfiber cloth and a mild cleaning spray specifically for car interiors.