Premature for me to really say because my car only has 45 or so miles on it but.... The MPG showing on the ODO mode is presently at 37 and rising. On my way home last night I reset the trip counter. The rush hour traffic and city driving thereafter (about 20 miles worth) results in about 45MPG. Most was normal or ECO mode driving. My son (was behind the wheel for about 10 miles and he doesn't pay for the gas, meaning he starts off at a light and is out of optimum...) Alan Note to self: who in his right mind lets his 16 year old son with 3 months of experience drive a car with 45 miles on it? Wait, I can't ask/answer that... My wife told me to let him drive.