We are planning on buying a new car sometime soon. We narrowed it down to these 3 cars. I know that VW owns Audi, and Porsche owns 50% of VW. I really want the Porsche Cayenne, cause its a porsche and it's nice. My Dad likes the Porsche and really likes the ML350. The Audi Q7 also has a lot of interior room. The thing is though, I heard it cost a lot of money for maintenece on the Porsche. I am not so sure about Audi or Mercedes either casue we have a Lexus, and 2 Nissans. So I was wondering what car would fit really good.