Depends on how you define "full power." If you mean full throttle, - ALL THE TIME. It's addictive, even if it's just 10-30, or 0-25, or even 40-70. It doesn't matter. It's amazing, and for me the primary reason to buy an S. The regular S for me at regular speeds is certainly quick (around the same as my old Model 3 Performance in the 0-60 range, and noticeably quicker above 60), but it's just not excitingly fast like the Plaid is. And yes, it's the doing and the knowing - that you can trounce anything you'd ever come across. I couldn't go back. Sad thing is, - it's unlikely my next car is as a quick as the Plaid so I may be forced to go back, boo!