18: Toyota Prius C:

A 53/58 city/highway mpg and a name that says reliability. It may not compare with some of the other makes in Prius but it will definitely do the job when it comes to more mileage and less fuel. If you’re looking for a car that will be cost efficient along with fuel efficient then this is your ticket, you may need to work on accommodating less as it has minimal amount of cargo space but nonetheless it made the list.