New to the site and to the X164 model!

Hampton, VA, USA
Happy Holidays everyone! I just purchased a 2012 GL450 with 77K on it. Owned by a doctor accompanied with a religious maintenance history performed at MB dealerships. Lot of bang for the buck! I do all my own work, love German vehicles and I am looking forward to enjoying this one as well. Other than pictures, won't take possession until 2/2021. 64K dollar question: Is the engine normally aspirated or turbocharged? It's not a deal breaker for me one way or the other. Either engine iteration is stout and the normally aspirated version will probably will have less maintenance costs over time.

I will truly miss my Euro BMW E61 diesel wagon. Ton's of torque and a true highway mile burner that get an average of 30 MPG. I wish I could bring it back with me. Be that as it may, I am looking forward to the GL450. Any suggestions and tips are very much appreciated. Thanks in advance.