Thanks to everyone for your comments I really appreciate the help! When I was referencing maintaining good gas mileage I was referring to the quoted fuel economy which is the same as my 328. However, it seems that they are inaccurate so I appreciate everyone pointing that out. I like the idea of having a SUV-type vehicle for being on construction sites, putting materials (like marble slab samples) in the trunk, etc. I am going to head to my dealership to take a look at one in person and drive it. I'll fill you all in with my thoughts! Thanks again for taking the time to respond.
2012 BMW 328i Sport Line- Jet Black/Coral Red
2013 Maserati GranTurismo Sport- Nero Carbonio/Cuoio
2012 Porsche Panamera - White/Black