Poor quality DLC and not much different from the 3rd game.
The steering and peddle response is excellent, very smooth game play and good graphics.
AutoVista was a nice feature and liked that they had Top Gear presenter Jeremy Clarkson narrating it, unfortunately he did not do the narration on the DLC cars, but that was to be expected.
The let down for me with this game was the lack of a good car selection, and the DLC did not in any way solve this issue. Yes there are a lot of cars in the game, but they are all from the same brands. They have like 23 Ferrari's, 30 Mercedes, 20 BMW's and 20 Audi's, but absolutely nothing for the other manufacturers. Expect a very small selection from the other car makers.
The DLC has been consistently the same, always containing at least 1 or 2 of the previously mentioned brands. Porsche was a DLC pack and was not released with the original game. There a quite a few cars that you can only get if you purchase the Limited edition or pre ordered the game and the Kinect feature is less then useless.
If you are a fan of smaller and lesser known european car manufacturers, then this game series might not be the best choice, they appear to only focus on the more main stream brands and not on cars like TVR, Wiesmann, Ginetta, Morgan, and so on. You only get a very small selection from them, and no where near what you should get in game of this genre.
All in all a good game, just suffers from over predictable DLC and limited selection of lesser known car brands.