It seems to me that the only true "luxury" cars listed are the Mercedes S-Class, BMW 7-Series and Chrysler 300. I consider the others being classified more as sports sedans than luxury cars. Yeah, they may be luxurious, but do they have that luxury car ride? Probably not.

Of those other makes mentioned, the "luxury" models would be the Acura RL, Infiniti Q45, Lexus LS430, and Audi A8.