One problem related to engine clicking and tapping noises has been reported for the 2007 Mercedes Benz SL550. The most recently reported issues are listed below.
2007 Mercedes Benz sl 550. Consumer writes in regards to several attempts to reach out to dealerships to repair vehicle engine failure. The spark plugs, valve, engine, transmission mounts and cam plugs on the left cylinder head were all replaced. However, two days later, the vehicle exhibited the same shake as before. As the consumer was driving home, the vehicle made a popping noise and lost all power. She later discovered the engine had exploded. The consumer stated a class action suit was sent to her home regarding an issue with shaft sprockets and idle gear.