 My prius has 10000 miles on it and I average no higher than 36mpg and only 25mpg in the winter.  The fuel gauge reads no gas left but when I fill up it only takes 7 gallons to fill its 11.9 gallon tank.  The engine is slow, loud, and noisy.  For a $30,000 car I expected more.  For an extra $5,000 my Subaru Tribeca gets 25mpg highway, power and heated seats, sunroof, AWD, 6 cylinder engine and better safety rating.