Top 5 Cars with The Worst Mileage Per Gallon

No. 3: Mazda speed 3

Mazda speed 3Public Domain Image: Public Domain

MPG (highway): 25

MPG (city): 18

Combined MPG: 21

With 263 horsepower and acceleration from 0-60 mph in just 6.3 seconds, the Mazdaspeed 3 is a really powerful car, perfect for those who really love driving and controlling a car. However, all this power comes at a cost, as the Mazdaspeed 3 is one of the least fuel efficient cars on the market, with a combined MPG of only 21.