I have a '07 with 55k miles that is completely stock under the hood. After my last track day event I started smelling coolant in my garage. I have driven the car a few times since then. Every time I strongly smell coolant for a short period of time. I have been under it and all around the engine with a flashlight and I cannot find any visible signs of a coolant leak. The water level appears the same in the overflow tank.

Any suggestions for specific places to look?
Is it safe to assume it is just time for a new water pump?

 

Pressure test it. You can rent the tool at your local Autozone or Oreily's. Had a similar issue like yours but not so severe. pressure testing the system you'll find where the leak is coming from