Kelavarus, Yes, NFS and NFS II were about being as close to the real thing as possible. I use the term physics loosely as there wasn't an actual physics engine that I know of.. but the Viper shifted into 4th around 98mph(or 115..I don't remember)..just as a real viper does. The interiors used actual photos of the real cars. You could see the performance difference of .98 vs 1Gs in the turns. If you gave it too much throttle in a turn, you got under/over steer. The NSX(slower car) got whooped by the testarossa(faster car)...Compared to NFS underground2 where all cars handled very similar for the most part and when you hit the gas out of a turn you can "drift" your way out of it, having complete control of left/right during the drift..all of the cars are about the same speed, regardless of displacement or amount of boost, sorry, 6 liters with 18psi would eat 2 liters at the same boost level..nothing realistic about that.
I have not played most wanted, so I cannot compare it.
I checked out the website for this latest NFS and it seems to be a disappointment for me in this way. Upgrades are used to outrun cops and can recharge...the only situation where that could be considered "real" would be in an overboost situation, which would be remedied by a bigger SC/turbo or intercooler...or turning the boost down. Or if the car had a hybrid system built for WOT.