2. Lamborghini Aventador Roadster
Thought you had seen the last of the Aventador? Popping the top off the car means more wind drag, which in turns drops its already dismal fuel mileage. The roadster version of the car achieves just 10 mpg in the city and 16 mpg on the highway. But think just how much better you will hear the 691 horsepower V12 engine screaming with the car’s top down!