2018 Kia Optima
31MPG
Combined
3
Trims
Updated February 27, 2026
Get the full picture on the 2018 Kia Optima. As a Full-Size Sedan, it achieves 25–31 combined MPG depending on trim and has not yet been rated by NHTSA. Below you’ll find detailed specs for every trim, plus recall information and competitor comparisons.
2018 Kia Optima Specifications
| Spec | Value |
|---|---|
| Combined MPG | 25–31 combined MPG depending on trim |
| City MPG | 28 |
| Highway MPG | 37 |
| Body Style | Full-Size Sedan |
| Fuel Type | Regular |
| Drive | FWD |
| Available Trims | 3 |
Available Trims
| Trim | MPG (City/Hwy/Combined) | Engine | Transmission |
|---|---|---|---|
| 4 cyl | 22/31/25 | 2.0L 4cyl | Automatic (S6) |
| 4 cyl | 24/34/28 | 2.4L 4cyl | Automatic (S6) |
| 4 cyl | 28/37/31 | 1.6L 4cyl | Automatic (AM7) |
Annual Fuel Cost
Based on EPA estimates, the 2018 Kia Optima costs approximately $1,583 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.
Compare the 2018 Kia Optima
See how it stacks up against similar vehicles:
Other Model Years
- 2020 Kia Optima
- 2019 Kia Optima
- 2018 (this page)
- 2017 Kia Optima
- 2016 Kia Optima
- 2015 Kia Optima
- 2014 Kia Optima
- 2013 Kia Optima
- 2012 Kia Optima
- 2011 Kia Optima
- 2010 Kia Optima
- 2009 Kia Optima
- 2008 Kia Optima
- 2007 Kia Optima
- 2006 Kia Optima
- 2005 Kia Optima
- 2004 Kia Optima
- 2003 Kia Optima
- 2002 Kia Optima
- 2001 Kia Optima
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