2018 Kia Optima S

Full-Size Sedan Regular
Kia Optima S 2018
26MPG Combined
1 Trim
2018
Updated February 27, 2026

Get the full picture on the 2018 Kia Optima S. As a Full-Size Sedan, it achieves 26 combined MPG 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 S Specifications

SpecValue
Combined MPG26 combined MPG
City MPG23
Highway MPG32
Body StyleFull-Size Sedan
Fuel TypeRegular
DriveFWD
Available Trims1

Annual Fuel Cost

Based on EPA estimates, the 2018 Kia Optima S costs approximately $1,700 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.

Compare the 2018 Kia Optima S

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Other Model Years

  • 2018 (this page)

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