Both engines feature the innovative Audi Valvelift System AVS which manages the inlet valve timing so that there is more torque and less fuel consumption. Discrete audio system with HD radio, 17 speakers and more than 500 watts of power. Predicted reliability on the sedan phoenix executive sedan is excellent, according to Consumer Reports. The first thing to note is that the Roadster is not car for most people, or even your typical Porsche enthusiast. The supercharged V6 actually ends up getting better fuel economy than the regular V6. Tastefully-appointed chrome trim, even on the spokes of the steering wheel, call attention to its overall elegance and inlays are available in either aluminum look or fine woods.