There are two currencies in-game:

•   Gold Coins - are used to purchase Cash, Premium Points, Supply Points, and to Restock the items in the Marketplace.
  
   
  
  
•   Cash - can be used to complete the upgrade of your cars and Aftermarket Mods.
  
  
   

At the top right of the screen, you can see how much Gold Coins and Cash you currently have; if you need a little more, you can access the Shop by tapping the plus icon.

In the Marketplace, you can purchase Gold with real money or buy extra Cash using Gold.

NOTE:

• You can get more Cash by winning races, such as Cash Grab.
• You can also get more Gold Coins by racing in Contracts, as well as leveling up and progressing through the game.