The casino update has introduced a number of new supercars in the GTA casino heist. So, let us take a look at the top five fastest cars in GTA 5 Online based on their top speed.Īlso Read | What Is Sea Race In GTA 5 And How You Can Participate In The Campaign? What is the fastest car in GTA 5 Online? And if you’re really into street racing, it is important that you pick a top-performing car to outperform your rivals. Having a fast car not only helps you get that chequered flag, but it also takes you to your destination much quicker. With all the latest expansions and updates, there are tons of options to choose from when it comes to buying a fast car in GTA 5 Online.