Gas Mileage
trying to figure out, normally my impala averages 26 to 28mpg... and if i'm running straight highway
low 30's however i had to take a trip out of state and i went all the way there, back home and to
work the next day and ended up putting like 186 miles on that tank of gas, probably 95% of which
was highway driving however my car only used 4.75 gallons of fuel, which would mean my car got
39mpg??? I didn't think that was possible or that car would even get close to getting that kinda gas
mileage? any possible explinations?