I agree that NONE of the responses are applicable to me nor to the idea of what I assume would be a question aimed at LUXURY CARS due to the site. Nav systems are important, but, with aftermarket and smartphones typically more up-to-date and offering more features, it isn't high on the list. Not a large percentage of the luxury car market buyers purchase based on fuel economy. Automatic Parallel parking is a gimmick for those that can't drive, plus, most luxury cars are valet parked anyway. Quality, Performance, Style & Reliability would have been much better choices.
gas mileage and style
Performance...period! Can you say Porsche?
A great car should have both cutting edge technology whike being eco-friendly.
Price of the vehicle is number 1 , the amenities are second and mpg is third !
MPG & value
Its all about the gas