Hello ML'ers,
I just bought a 2008 ml550 with 52k miles. Interior and exterior are in mint condition. Mechanically it drives decent except that I sometimes hear a clunk sound. It happens sometimes only during low speeds on either first or second gear. Transmission is fine during higher speeds and no weird noises otherwise. To be precise it will happen when I'm pulling into my driveway when I accelerate after braking or when I'm taking a slow turn, but again only sometimes. Don't know what to make of it. Should I be concerned?
Your advice, suggestions and opinions will be appreciated.

Thanks