Originally Posted by MadMac

Yes you can still modify cars, not as much as say forza, but you can upgrade the parts, tune them, do racing conversions, update the wheels, add spoilers.

Since GT5's release there has been LOADS of updates adding new features, there is so much now its almost a totally different game now! 16 updates in total.

http://gran-turismo.wikia.com/wiki/L...Gran_Turismo_5