Board Thread:Game Discussion/@comment-28390490-20160903172154/@comment-69.133.107.106-20160903200126

That is the same issue we are all dealing with. There are only a small number of cars that earn a return on investment, and a few more that are a small loss. Mostly, they are gold HOGS. Personally, I would rather buy/win more cars than fully upgrade at a huge loss. At least I feel I'm getting something for my gold.

Even adding in the return for the exclusive series, most of the upgrades will still be much much more than you'll ever get back.