How do you start a 1987 Mercedes 300 E without a key?

Starting a 1987 Mercedes 300 E without a key is not recommended, as it can be illegal and may damage the vehicle's ignition system. However, if you're locked out and in an emergency situation, you might try using a slim jim or similar tool to unlock the door, then access the ignition wires to bypass the ignition switch. It's best to contact a locksmith or a professional for assistance to avoid potential legal issues and damage to the car.