The most important question first: How does it look with the controller control?
Yes, the cars are (especially with cold tires) difficult to control - compared with PC drive the cars in Forza 5 as if on rails. Without having now real experience with an LMP Le Mans - if you are still with cold tires from a curve out full speed breaks the rear grip from - in PC and (most likely) in the real world.
But after some practice laps (route, braking and apexes, handling, ...) I get along very well with the default settings of the controller control.
The graph with their light and weather effects is also very well done. In the Belgian Ardennes at sunrise and a little fog over the route to thunder has already what. ;-)
In the replays's - especially at the start when all cars are seen at the same time - now and then * something * Tearing. Not nice, but definitely not a deal breaker.
The sound is as it must be in a racing game. The engines roar from the massive (Surround) system. I was surprised that the developers seem to have the surround sound effects even mixed "right": for example, comes in a transaxle cars (Aston Martin) the engine sound from the front, while the crashing and crunching the gearbox from behind (where in reality the Transmission sits) comes.
Here's unfortunately the only truly annoying bug: During my far 3, 4 hours of play I had two or three times the problem is that the engine sound for 1 or 2 seconds stuck.
Away from the race:
The reunion comes dry and simulation like therefore; Unfortunately you have to leave the current race for almost any setting in the settings menu and can only begin again the whole race from the front. Especially annoying in experiments with the fieldOfView regulator. ;-)
Project CARS is particularly in relation to the simulation aspect, sound and setting the new benchmark on console racer sky.
Unfortunately just tarnishes the one or the other (verschmerzbare) Bug the joy of driving. Sure, little bugs, visit each game; But just after several shifts such things should not occur as the Soundbug. So there's "only" four stars.