what is the fastest car in forza horizon 5 fully upgraded

The fastest fully upgraded car in Forza Horizon 5 is generally the Hennessey Venom F5 , which recent sources place at about 307 mph / 494 km/h when tuned for top speed. Some older discussions still name the Koenigsegg Jesko as the fastest, but newer references say the Venom F5 took the crown after updates.

Quick Scoop

If you want the best pure top-speed pick , go with the Hennessey Venom F5.

If you mean best all-around fully upgraded car , that depends on what you’re doing:

• Top speed: Hennessey Venom F5.

• Drag / straight-line runs: Hennessey Venom F5 or Koenigsegg Jesko, depending on tune.

• Overall fun/versatility: community picks sometimes include cars like the Lamborghini Sesto Elemento Forza Edition for general performance.

Why it wins

The reason the Venom F5 stands out is simple: it already has extreme factory power, and in FH5 it can be tuned to break the 300 mph barrier. That puts it ahead of the Jesko in recent top-speed rankings.

If you want, I can also give you:

• the best tune for the Venom F5 ,
• the best car for acceleration , or
• a top 5 fastest FH5 cars list.