17 years old, 189k miles. Chosen in 2004 for reliability and ease of driving (it's my first car). Extreme mileage wasn't a priority when I got it, but I'm making due with what I have. Torque converter lock FTW (I'm lucky, it kicks in as low as 40mph). (EPA numbers are estimated for the "new" ones, and they're considerably lower, so i'm using the higher "old" EPA mileage measurements)
Frontal area reduced nearly 3% by removing the mirrors.
Current Mods:
K&N air filter
side mirrors (delete)
rear wheel skirts
partial grille block (72 square inches left open)
short chin airdam
partial undertray (airdam back to wheels)
MPGuino
Planned Mods:
front wheel deflectors attached to undertray
front wheel skirts
test vortex generators on roof and possibly spoiler on trunk
more smooth undertray
larger diameter, slightly thinner tires (when I next need tires)