Fastest Sedan What Is The Fastest Overall Sedan 2001-2008 I Can Buy Used For Under 15k That Still Gets 20+ Mpg?

What is the fastest overall sedan 2001-2008 i can buy used for under 15k that still gets 20+ mpg? - fastest sedan

2002 Subaru Impreza (WRX), the turbo is.
You can also classify the STI wouldnt, but as a sedan, despite its much faster.
I say 2002 because a model is better and easier to do their own work. But you can also create a new one if you prefer to see it /