Cosworth 
2007 Toyota Yaris Sedan S 4dr Sedan (1.5L 4cyl 5M)
40+ mpg on average in MI
 I bought the car as a commuter, and it's been a great gas-sipping machine.  On average, I average 40-42mpg on my commute (90% hwy/ 10% city).   It's definitely not as fun as a Civic or Mazda 3, but gas mileage makes up for it.   I would highly recommend it to anyone looking for a no-hassle commuter car that gets just as good, if not better, gas mileage as most hybrids in the market. 