Andreas Pereira has been fined €3600 and banned from driving for eight months after driving at 148 km/h in an area of Valencia with a limit of 50 km/h.
Pereira regrets speeding
The 21-year-old, on loan from Manchester United, expressed regret on his Twitter account:
"Very sorry for driving my car at excessive speed yesterday afternoon, I will accept the punishment," Pereira wrote.
He added: "It's important to be careful when driving and always respect the rules. Lesson learnt."
Pereira has made six appearances and scored one goal for Valencia this season. Los Che are in second place in LaLiga and remain unbeaten.