2018 Kia Optima MPG and Fuel Economy

On this page, you will find a complete guide to the miles per gallon and fuel efficiency data for the 2018 Kia Optima.

The 2018 Kia Optima has 3 model options: Automatic (S6) 4-cyl, 2.0 L, Automatic (S6) 4-cyl, 2.4 L and Automatic (AM7) 4-cyl, 1.6 L.

The 2018 Kia Optima Automatic (S6) 4-cyl, 2.0 L runs on regular gasoline and is in the Large Cars car class.

The 2018 Kia Optima Automatic (S6) 4-cyl, 2.4 L runs on regular gasoline and is in the Large Cars car class.

The 2018 Kia Optima Automatic (AM7) 4-cyl, 1.6 L runs on regular gasoline and is in the Large Cars car class.

🛣 How Many Miles per Gallon (MPG) Does a 2018 Kia Optima Get?

Across all models, the combined average MPG for the 2018 Kia Optima is 28 miles per gallon.

The table below breaks down the MPG for each model option:

Model Option Combined MPG City MPG Highway MPG
Automatic (S6) 4-cyl, 2.0 L 25 22 31
Automatic (S6) 4-cyl, 2.4 L 28 24 34
Automatic (AM7) 4-cyl, 1.6 L 31 28 37

💵 What is the Average Yearly Fuel Cost for a 2018 Kia Optima?

The average fuel costs for all models of the 2018 Kia Optima is $2,250.

The average fuel costs have been estimated by government regulators based on 15,000 miles driven per year, using regular gasoline, and a split of 55% city driving and 45% highway driving.

Comparing a 2018 Kia Optima to an average vehicle over 5 years, you will save $250 on fuel.

The table below shows the fuel costs and 5-year save/spend for each model option:

Model Option Fuel Cost 5-Year Save/Spend
Automatic (S6) 4-cyl, 2.0 L $2,500 spend $1,000 more
Automatic (S6) 4-cyl, 2.4 L $2,250 save $250
Automatic (AM7) 4-cyl, 1.6 L $2,000 save $1,500

🛢 How Many Barrels of Petroleum Does a 2018 Kia Optima Consume?

Across all models, the average number barrels of petroleum that the 2018 Kia Optima will consume in one year is 11 barrels.

The majority of the world's petroleum is sourced from countries like Saudi Arabia, Russia, Iraq, and the United States.

Model Option Barrels
Automatic (S6) 4-cyl, 2.0 L 12
Automatic (S6) 4-cyl, 2.4 L 11
Automatic (AM7) 4-cyl, 1.6 L 10

💨 How Many Grams of CO2 Does a 2018 Kia Optima Emit?

The 2018 Kia Optima will emit an average of about 4,835,000 grams of CO2 per year.

🌳 To help you understand the impact of this, a normal tree will absorb around 21,000 grams of CO2 per year. This means that roughly 165 trees would be needed to offset emissions from the 2018 Kia Optima.

Overview

The tables below cover all of the miles per gallon, engine specifications, and emission details we have for the 3 2018 Kia Optima model options.

Automatic (S6) 4-cyl, 2.0 L

The table below contains all of the details we have for the 2018 Kia Optima Automatic (S6) 4-cyl, 2.0 L:

City MPG 22
Highway MPG 31
Combined MPG 25
Save/Spend vs Average Car Spend $1,000
Fuel Cost $2,500
Fuel Type 1 Regular
Barrels of Petroleum 12
Grams of CO2 5,400,000
Trees Needed to Offset 257
Drive Front-Wheel Drive
Cylinders 4
Transmission Automatic (S6)
Vehicle Class Large Cars
Start/Stop? No
Supercharged? No
Turbocharged? Yes

Automatic (S6) 4-cyl, 2.4 L

The table below contains all of the details we have for the 2018 Kia Optima Automatic (S6) 4-cyl, 2.4 L:

City MPG 24
Highway MPG 34
Combined MPG 28
Save/Spend vs Average Car Save 250
Fuel Cost $2,250
Fuel Type 1 Regular
Barrels of Petroleum 11
Grams of CO2 4,815,000
Trees Needed to Offset 229
Drive Front-Wheel Drive
Cylinders 4
Transmission Automatic (S6)
Vehicle Class Large Cars
Start/Stop? No
Supercharged? No
Turbocharged? No

Automatic (AM7) 4-cyl, 1.6 L

The table below contains all of the details we have for the 2018 Kia Optima Automatic (AM7) 4-cyl, 1.6 L:

City MPG 28
Highway MPG 37
Combined MPG 31
Save/Spend vs Average Car Save 1,500
Fuel Cost $2,000
Fuel Type 1 Regular
Barrels of Petroleum 10
Grams of CO2 4,290,000
Trees Needed to Offset 204
Drive Front-Wheel Drive
Cylinders 4
Transmission Automatic (AM7)
Vehicle Class Large Cars
Start/Stop? No
Supercharged? No
Turbocharged? Yes

Disclaimer

Ratings were provided by the manufacturer to the U.S. Department of Energy, which is where we sourced the data. Be advised that manufacturers may have upgraded, downgraded, or changed these ratings following the compilation of this data.

MPG Buddy does not guarantee the accuracy of this data, nor are we liable for any decisions made by referencing this data. Make sure to contact the specific car manufacturer to confirm accuracy.

Link To or Reference This Page

We spend a lot of time collecting, cleaning, merging, and formatting the data that is shown on the site to be as useful to you as possible.

If you found the data or information on this page useful in your research, please use the tool below to properly cite or reference MPG Buddy as the source. We appreciate your support!

  • "2018 Kia Optima MPG and Fuel Economy". MPG Buddy. Accessed on March 29, 2024. http://mpgbuddy.com/cars/kia/optima/2018.

  • "2018 Kia Optima MPG and Fuel Economy". MPG Buddy, http://mpgbuddy.com/cars/kia/optima/2018. Accessed 29 March, 2024

  • 2018 Kia Optima MPG and Fuel Economy. MPG Buddy. Retrieved from http://mpgbuddy.com/cars/kia/optima/2018.