How often do you need to change motor oil on a Mercedes 2002 C320?

For a 2002 Mercedes C320, it's generally recommended to change the motor oil every 7,500 miles or every six months, whichever comes first. However, if you frequently drive under severe conditions—such as frequent short trips, heavy traffic, or extreme temperatures—you may need to change it more often. Always consult your owner's manual for the most accurate maintenance schedule specific to your vehicle.