I have been hypermiling for a while now, and now I wish to work on aerodynamic modifications. My car is a 2004 Chevy Aveo sedan AT rated at 23/31/26 mpgUS city/highway/combined respectively. I have posted a thread
here on ecomodder about an upper grill block that I made for my car to smooth out the front a bit, but in an attempt to keep things organized, I will add modifications that I make to this thread.
Here is a picture of my car with no changes:
Here is the grill block I added:
Side view:
