Auto guides and the motoring press are not good sources for an encyclopedia article about luxury vehicle This is because automakers feed the press a lot of BS Boastful Superlatives who then work hard to write articles adding even more BS to describe their products The press earns credits from the hands that feed them Add to this the fact that potential and actual purchasers of luxury vehicles have an insatiable appetite for this type of BS Classifying a particular vehicle as luxury is also designed to easily make it superior to other vehicles even if the differences are superficial Using self serving BS in marketing claims is a very very old invention that helps sell products as well as fuel the fan base with bragging rights to which vehicles are luxury On the other hand it is more difficult for most marketers to be humble and genuine That is why an encyclopedia article has to avoid falling into the trap of using traditional marketing superlatives and hyperbole