My 2012 Kia is a 6sp manual. It's getting gas but doesn't barely want to move. Brake/Clutch fluid is good. Trying to fig out if it's the clutch, or maybe a cylinder.

What is your question?

It started yesterday. In the lower gears, the RPM and sound of the motor would rise, but it seemed less power was making it to the transmission. Now it has exceeded all the way to the 6th gear. Top speed in 6th is 45MPH. But now, I can barely get 3MPH in 1st. (was trying to not have to tow it) Clutch feels ok. No leaks that I'm aware of. Could it possibly be the fuel pump?

How long has your 2012 Kia Rio had this problem?

2 days.