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:

💵 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:

🛢 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.

💨 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:

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:

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:

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.

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