Events were 2-week to 3-month periods of time when limited-time cars and achievements were added to the game. The cars and achievements were usually related to the theme of the event. Racers were encouraged to complete as many event achievements as possible before the event ended. Once every event ended, the achievements and cars become unobtainable. In many cases, the admins decided to bring some of the event cars back for the following years. As a result, some event cars are more common than others.
Many changes within Nitro Type involving Seasons took place throughout 2019, making them more rewarding and more similar to events. After finding that seasons were more profitable, they began to stop running events in favor of seasons. This was confirmed by Travis on January 6, 2020. 
All event cars