It might not look the prettiest in terms of aesthetic, but when fully upgraded the Ocelot Pariah is the fastest car in the GTA 5 Online. The Ocelot Pariah was first introduced as part of the Doomsday Heist update in 2017. The fastest car in the game is part of the 'sports' vehicle class, which may come as a surprise to many players.
Players can obtain the Ocelot Pariah from the Legendary Motorsport website in-game, for a total of $1,420,000. Once fully upgraded, the Ocelot Pariah has the best top speed of any car in GTA 5, making it the fastest car in the game. Players will need to head over to a garage and upgrade the Pariah with new engine modifications, suspension, and more to unlock the cars full potential. The Ocelot Pariah has a top speed of 136mph, making it the fastest car in GTA 5. This list solely focuses on the top speed of cars and does not take into account the handling or acceleration of the listed vehicles.