2018 Honda Civic vs 2018 Mazda3

2018 Honda Civic LX exterior front fascia and drivers side on road vs 2018 Mazda3 exterior front fascia and passenger side on road

If you are searching for a sedan, you may have come across the 2018 Honda Civic. We are here to compare this sedan to one of its common competitors: the 2018 Mazda3. This is an effort to see which vehicle outstrips the other when it comes to engine power, fuel efficiency, and cargo space. This research will hopefully help any car shopper as they research what sedan will be their next vehicle.

For the purpose of this comparison, we will be using the specs and features of the 2018 Honda Civic LX 4dr sedan with the 2.0-liter 4-cylinder engine. It is compared to the 2018 Mazda3 Sport 4dr sedan with the 4-cyilender engine. Hopefully, by the end of this comparison, you will be able to see exactly what vehicle suits your driving needs. Now, let’s see what each sedan offers its potential drivers.

2018 Honda Civic


2018 Mazda3

158 hp Horsepower 155 hp
12.4 gal Fuel Capacity 13.2 gal
28/40/32 mpg* EPA-Estimated Fuel Efficiency city/hwy/combined* 28/38/31 mpg
15.1 cu. ft. Cargo Space 12.4 cu. ft.

Advantages of the 2018 Honda Civic

As you can see in the table above, the 2018 Honda Civic has a great competition in the 2018 Mazda3. However, it pulls ahead when it comes to power. The Civic generates just a bit more horsepower than the Mazda3. It has 158 hp, compared to the Mazda3, which has 155 hp. For anyone who is looking for a powerful sedan, the 2018 Civic has just a bit of an edge on the 2018 Mazda3.

The same can be said for fuel efficiency. While the Mazda3 actually has a larger fuel tank, the Civic has an EPA-estimated fuel efficiency of 28/40/32 miles per gallon* on the city/highway/combined. The Mazda3 doesn’t get as much mpg on the highway, which sets the sedan back when it comes to combined mpg as well.

For those who wish for a more spacious sedan, there is a solid option in the 2018 Honda Civic. It has 2.7 more cubic feet than the Mazda3, which can definitely make a difference when hauling around gear or groceries.

* Based on 2018 EPA mileage ratings. Use for comparison purposes only. Your mileage will vary depending on driving conditions, how you drive and maintain your vehicle, battery-package/condition, and other factors.