Who is better sonic or Goku?

First let's analyze Sonic. He is as fast as the speed of sound, which means he can run for about 768 miles per hour, He is faster when he creates the Sonic boom. Sonic can still be seen while he's running, which means he isn't that fast. Sonic may be fast, but he is not strong. Sonic's weakness is water. Once Sonic gains all the seven chaos emeralds, he can unlock the form of Super Sonic, he is faster and can jump much higher, however he still can't survive underwater, He also has a ring limit of becoming super.

Now let's analyze Goku. Goku is can go as fast as 186,000 miles per second, That means he is faster than Sonic, Goku can't be seen when he travels, which makes him extremely fast. Goku has the Kaiouken which makes his strength, hearing, vision, and agility increase. Goku can also unlock the legendary Super Saiyin, and does not have any limit of sort for the transformation.

In conclusion, Goku can kick Sonic's butt any day.