GRID is a racing game that did not let you drive like crazy and crashing all the stuff in your way (just like in Need For Speed) nor it is too realistic to give you penalty for driving through the grass or disqualified you for just losing a front bumper (like in F1) . So this game has a nice balance between realism and arcade, that is what makes this game is enjoyable and fun for casual gamers and racing enthusiast alike. This game also welcomed newbie or pro racing gamer. For newbie you can turn on all the driving assist in the game so the driving will be more simple and easy to learn, or if you feel like racing game is your everyday life you can turn off all the driving assist for more complex driving and customize the driving options so the car will perform like what you expect.
As for the graphics, although this is an old game (realeased in 2007) the graphics of this game is still feel good and comparable to current game graphics. The best thing about the graphics is the car crash effect, it looks so realistic !! see it for yourself here https://www.youtube.com/watch?v=fH2KUrNow7s
But for me, the best thing about this game is that all race events in the game are based on actual official racing event, from the prestigious 24 Hours of Le Mans to the brutal American Demolition Derby (so don't expect any ilegal street racing in this game! ).