I find the tracks are a little bumped up compared to gt5 (lighting feels little more realistic on some tracks), and the car modeling (like with the interiors) is better. The driving engine is the same as gt5. It's a pretty good game overall i'd say (8/10), though not the best in the series. I still think gt3:A spec was the best gran turismo game. And gt2 had the best soundtrack of any gran turismo game. The soundtrack in the series has become quite lame now, it's like they don't pay attention anymore to choosing the songs and artists, gt6 is forgettable with the soundtrack, and so was gt5.