Board Thread:Game Discussion/@comment-93.103.154.255-20160502115651/@comment-27962837-20160502120204

There isn't a list, but as far as I remember, you listed every car that you need to buy with gold outside Legend.

In Legend, I bought the 2014 RSR for Vertex (only R$ upgrades are enough, bought on sale, 450 GC), and from the gauntlet 3, I won the 2015 RSR for Racing Spirit. It made things easier.

I don't know exactly if other cars are enough in these series (As I remember, the Renault R.S.01 would need so many gold upgrades for the required PR, that you are equal to buying the 2015 RSR with showcase), it might worth it to check.

You won't need the 2013 RSR under any circumstances.