Not a huge improvement, but I'll bet I have the most economical car on TR if we include original purchase cost. I really feel like I've hit a wall. Been driving with windows up and blower/vents off and can't get 39..

Car Type: 1985 Toyota Corolla Sport SR5
Miles on Car: 233,000
Gallons: 12.0
Miles: Never maxed it out, but most I've gotten has been 421.4
MPG: 38.78
EPA: 31
% Improved: 25%