The 2005 Mustang has an excellent quality interior. I heard that Mazda is the supplier for the brand new redesigned interior for the 2005 Mustang. That's why it's of higher quality. The 2005 Mustang is going to be built in the Mazda plant where they also build the Mazda6 vehicles. I think that Mazda has a lot to do with which materials Ford is going to use to build the 2005 Mustang.