There are lots of things that pop for me. The in depth tuning options. The fine tuning options for FFB especially per car/track. The ability to change the steering ratios by car/track. The way it handles tires and brakes, engine temps, oil temps, mechanical failures and of course the way it feels when you are behind the wheel.
Over on the GT side of the forums people are always asking for the long endurance races back but to me they are totally pointless in GT. The only real endurance factor was can you keep driving that long. Either your car was capable of faster laps than the AI or it wasn't and you would win or loose based pretty much solely on that and your attention span.
In PCars on the other hand you can set it up for full damage, mechanical failures, real tire wear and fuel usage and if you run out of gas you don't get to limp around the track at 50mph, If you over drive the car, hit something, get hit, misjudge the weather, tire status and such then you could have the fastest car on the track and still loose the race. In other words endurance racing has a whole new meaning than what it did in GT and may actually be interesting though may be possible to drive for 20 hours and get a DNF.
I just wish there was a way to monitor the engine temps and such in all driving views. Desperately need that added to the hud options.
Oh did I mention that it has leaderboards
separate board for each car and you can tune the car to your liking. Of course this should be in all racing games in some form or another.
Last edited: May 21, 2015