Kia Optima MPG and Fuel Economy
Kia have been manufacturing models of Optima for 20 years, with the latest vehicle in 2020 having a combined MPG of 31.
The estimated fuel cost for the 2020 Kia Optima is $2,000 per year.
Government regulators have estimated that value based on 15,000 miles driven per year, using regular gasoline, and a split of 55% city driving and 45% highway driving.
💵 Compared to an average vehicle over 5 years, you will save $1,500 on fuel driving a 2020 Kia Optima.
🛢 The Kia Optima will consume roughly 10 barrels of petroleum per year, using the standard estimate of 15,000 miles per year.
💨 For every mile driven, the Kia Optima will emit 292 grams of CO2, which is about 4,380,000 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 209 trees would be needed to offset emissions from the Kia Optima.
The table below is a complete list of the 20 Kia Optima fuel efficiency specifications we have data for.
Click any vehicle link to see a more detailed breakdown of the car, miles per gallon, emissions, and more.
| Vehicle | Combined MPG | Fuel Cost |
|---|---|---|
| 2020 Kia Optima | 31 | $2,000 |
| 2019 Kia Optima | 31 | $2,000 |
| 2018 Kia Optima | 25 | $2,500 |
| 2017 Kia Optima | 31 | $2,000 |
| 2016 Kia Optima | 31 | $2,000 |
| 2015 Kia Optima | 24 | $2,600 |
| 2014 Kia Optima | 24 | $2,600 |
| 2013 Kia Optima | 26 | $2,400 |
| 2012 Kia Optima | 26 | $2,400 |
| 2011 Kia Optima | 27 | $2,300 |
| 2010 Kia Optima | 25 | $2,500 |
| 2009 Kia Optima | 25 | $2,500 |
| 2008 Kia Optima | 25 | $2,500 |
| 2007 Kia Optima | 25 | $2,500 |
| 2006 Kia Optima | 22 | $2,850 |
| 2005 Kia Optima | 22 | $2,850 |
| 2004 Kia Optima | 22 | $2,850 |
| 2003 Kia Optima | 22 | $2,850 |
| 2002 Kia Optima | 20 | $3,150 |
| 2001 Kia Optima | 20 | $3,150 |
Link To or Reference This Page
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"Kia Optima MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/kia/optima.
"Kia Optima MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/kia/optima. Accessed January 3, 2026.
Kia Optima MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/kia/optima.