I urge you to price a similar car from a luxury brand (so Acura, Audi, BMW, Mercedes, Lexus, Nissan, Infiniti and maybe Cadillac) with similar feature set (specifically all safety packages, lane-tracking and self-parking packages where available) and see what you come up with.<p>Fully loaded versions are very expensive because luxury manufacturers feel they can charge whatever they want and get away with it. Those things cost a pretty penny - a navigation system add-on in BMW, for example, is just under $2k (as if you&#x27;d buy a luxury vehicle without navigation system in 2016). A backup camera from Mercedes is optional even in &quot;luxury&quot; edition of their vehicle, and is $770. Blind Spot Monitor is another $750.<p>And we excluded ultra-luxury sporty manufacturers like Maserati, Ferrari and Lamborghini, as they represent comparatively tiny segment of the luxury market. However, &quot;performance&quot; versions of Acura, Lexus, BMW, Mercedes and even Nissan (GT-R) and Chevrolet (Corvette), if that&#x27;s what you&#x27;re after, are priced above &quot;performance&quot; versions of Model S.<p>Then there&#x27;re the maintenance costs, more or less mandatory at dealer prices if you ever want to sell your car for decent resale value. Then subscriptions for things like maps, navigation and XM real-time traffic. Then, of course, the cost of gas - even if you assume oil falls down to $0 (perhaps a free tank of gas with a purchase of a hot dog at the gas station, if current price trends persist), you&#x27;re still getting pretty close on the TCO front for 4-5 years.