HOT WHEELS UNLEASHED

In order to upgrade a car in your Collection, you need at least 200 Gears which can be earned in the Hot Wheels City Rumble mode by completing objectives in races. You can check what rewards you get from each tile by hovering over them.

At the main menu, if you have 200 Gears in the top-right corner, go to Collection, select any Common-labelled car you like, then hold on it to upgrade some of it's stats slightly and pop the achievement.

In this video guide I will show you how to upgrade the rarity of one common vehicle. First you will need to do some story missions to earn some gears. Save up to 200 then go to your collection from the main menu. Pick a common car, it will tell on the top left of the screen under the name of the car. Hold the A button to upgrade and the achievement will pop.