2. BMW 4-Series
Gas mileage: 21 MPG (city) | 32 MPG (highway)
The BMW 4-Series is a very fuel efficient sports car. The auto sees an impressive fuel economy rating of 21 MPG (city) and 32 MPG (highway) and is sold with both a convertible and coupe option when buying new. The stock engine in the German sports car is a 2.0 liter turbo-four cylinder that is rated at 240 horsepower. An alternative drivetrain available for the car is a 3.0 liter turbo inline-six cylinder rated at 300 horsepower for those who want a bit more power out of the vehicle. BMW sells each drivetrain option with the choice of a six-speed manual or eight-speed transmission. Rear-wheel drive is also standard equipment on the car with the ability to upgrade to all-wheel drive. The 4-Series can go from zero to 60 MPH in only 4.9 seconds, and the car has a maximum speed of 155 MPH.