It can be played online on http://www.netfreegames.com/car-racing/tuning-golf-4.html
In this tuning game you can customize a Golfe Mark 4, changing parts like body kits, spoilers, wheels, lights, colors, windows, etc.
This game was made by a indie developer. Copyrights on images and brands belongs to corresponding owners.
Give it 5 stars and I make more games ;)