After 11,000 miles, I felt the car just didn't have the same pickup it used to have when it was new. While looking things over under the hood, I decided to inspect the air filter. Turns out it was jam packed with leaves, bugs, and brake dust. Isn't the dealer supposed to check this during any of the scheduled maintenance? Anyway, shook it all out and blew it with some air and put it back. It made a noticeable difference in the throttle response and get-up-and-go
Stupid bugs.