Kia Optima Gas Tank Size & Fuel Capacity by Year

Sedan 2001–202020 model years

16.4–18.5gal · 62–70 L

Across 20 model years (2001–2020), the Kia Optima has used tanks from 16.4–18.5 gallons. The 2020 model holds 18.5 gallons.

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Kia Optima fuel tank by model yearSmallest tank Larger tank options

Model years with the same tank sizes, grouped. A change usually marks a new generation or a redesign.

Year	Tank	Liters	Best highway range	Trims
2020 Kia Optima	18.5 gallons	70 L	685 mi	6
2019 Kia Optima	18.5 gallons	70 L	685 mi	4
2018 Kia Optima	18.5 gallons	70 L	685 mi	5
2017 Kia Optima	18.5 gallons	70 L	685 mi	5
2016 Kia Optima	18.5 gallons	70 L	722 mi	5
2015 Kia Optima	18.5 gallons	70 L	629 mi	5
2014 Kia Optima	17.2–18.5 gallons	65–70 L	688 mi	7
2013 Kia Optima	17.2–18.5 gallons	65–70 L	688 mi	5
2012 Kia Optima	17.2–18.5 gallons	65–70 L	688 mi	6
2011 Kia Optima	17.2–18.5 gallons	65–70 L	671 mi	6
2010 Kia Optima	16.4 gallons	62 L	525 mi	6
2009 Kia Optima	16.4 gallons	62 L	525 mi	6
2008 Kia Optima	16.4 gallons	62 L	508 mi	5
2007 Kia Optima	16.4 gallons	62 L	508 mi	5
2006 Kia Optima	16.4–17.2 gallons	62–65 L	508 mi	10
2005 Kia Optima	17.2 gallons	65 L	482 mi	5
2004 Kia Optima	17.2 gallons	65 L	464 mi	5
2003 Kia Optima	17.2 gallons	65 L	464 mi	4
2002 Kia Optima	17.2 gallons	65 L	447 mi	6
2001 Kia Optima	17.2 gallons	65 L	447 mi	6

NHTSA lists fuel-system recalls for 9 Kia Optima model years. Each year's page has the details, the risk and the free remedy.

What size gas tank does the Kia Optima have?

The 2020 Kia Optima holds 18.5 gallons. Older years range from 16.4–18.5 gallons; the table has every year.

Has the tank size changed over the years?

Yes. The largest tank changed in 2011, 2007.