2018 Kia Optima prices in the U.S.
The median pre-owned asking price for a 2018 Kia Optima in the U.S. is $10,995 based on 520 pre-owned listings (of 528 total).
As of August 8, 2026, the median asking price for a used 2018 Kia Optima in the U.S. is $10,995, based on 520 active dealer listings tracked by VinAssessment.
◷ Updated August 8, 2026 ▤ 528 active dealer listings, refreshed daily ⛭ Generation: 2015–2020 Methodology →
Typical: $8,995–$12,995 — the middle half of 528 asking prices
Why the wide range? Price depends mostly on configuration and mileage — see below. This spread covers the middle 96% of asking prices: we exclude the cheapest and priciest 2% (payment-priced ads, typos, salvage) so outliers don't distort it.
What moves the price on a 2018 Kia Optima
The $8,995–$12,995 typical range isn't randomness — three factors explain most of it:
Asking prices run about $17,990 at 15K–30K miles and fall to $9,247 over 105K miles — roughly $1,000 for every 10,000 miles.
The same car typically asks $8,999 in New Hampshire but $13,995 in Delaware.
The LX typically asks $10,609, while the SX asks $13,897 — same year, same market.
Find your mileage and trim in the configurator below.
Configure the exact car
Modelled from 400 real asking prices, adjusted for mileage and location. Not a formal appraisal.
What would a 2018 Kia Optima cost per month?
Estimate the monthly payment on a $10,609 vehicle. Move the numbers to match your own loan.
Estimate only. Excludes tax, title, registration and dealer fees, and assumes a fixed-rate loan with equal monthly payments. Your actual rate depends on your credit and lender.
Watch this price
Prices move every week. Tell us where to reach you and we'll email you when the typical asking price for 2018 Kia Optima moves 3% or more. No account, one-click unsubscribe.
We only email you about this vehicle's price. Unsubscribe from any message.
2018 Kia Optima: a fair price for your mileage
A 2018 Kia Optima sheds roughly $1,000 for every 10,000 miles. Find your mileage below.
Fair price by mileage and trim
| Mileage | All listings | LX | EX | SX |
|---|---|---|---|---|
| Under 15K miles | — | $16,321 | — | — |
| 15K–30K miles | $17,990 | — | — | — |
| 30K–45K miles | $13,972 | $13,250 | $16,238 | — |
| 45K–60K miles | $15,058 | $14,571 | $15,504 | — |
| 60K–75K miles | $13,854 | $13,395 | $14,725 | — |
| 75K–90K miles | $12,584 | $12,486 | $12,522 | $15,500 |
| 90K–105K miles | $11,236 | $11,043 | $12,012 | $13,750 |
| Over 105K miles | $9,247 | $9,121 | $10,150 | $11,578 |
Medians of live asking prices per band and version; “—” means fewer than 3 matching listings. National data.
Fair price by mileage — all versions combined
| Mileage ⓘ | Based on ⓘ | Fair price ⓘ | Typical range ⓘ |
|---|---|---|---|
| 15K–30K miles | 5 listings | $17,990 | $18K–$19K |
| 30K–45K miles | 12 listings | $13,972 | $13K–$17K |
| 45K–60K miles | 23 listings | $15,058 | $13K–$16K |
| 60K–75K miles | 49 listings | $13,854 | $12K–$15K |
| 75K–90K miles | 84 listings | $12,584 | $11K–$14K |
| 90K–105K miles | 102 listings | $11,236 | $9,999–$13K |
| Over 105K miles | 248 listings | $9,247 | $7,900–$11K |
Same trim and condition assumed — mileage is the biggest lever after configuration.
2018 Kia Optima: price by trim
| Trim | Based on ⓘ | Median price ⓘ | Typical range ⓘ | Where it sits ⓘ |
|---|---|---|---|---|
| LX | 400 listings | $10,609 | $8,916–$13K | |
| EX | 91 listings | $12,143 | $10K–$14K | |
| SX | 20 listings | $13,897 | $12K–$16K |
Based on a small number of listings per trim — medians are indicative, not definitive.
Price history
Median asking price by month · shaded band is the typical range (25th–75th percentile)
The median listing price for a 2018 Kia Optima is $11,986 (August 2026) — down 4.1% from $12,498 in August 2025.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| August 2026 | $11,986 | $9,657–$14K | 272 |
| July 2026 | $11,532 | $9,600–$14K | 689 |
| June 2026 | $11,498 | $9,251–$14K | 702 |
| May 2026 | $11,494 | $9,378–$14K | 668 |
| April 2026 | $11,047 | $9,000–$13K | 557 |
| March 2026 | $11,646 | $9,400–$14K | 765 |
| February 2026 | $11,352 | $9,499–$14K | 716 |
| January 2026 | $10,996 | $8,995–$13K | 688 |
| December 2025 | $11,022 | $9,024–$13K | 598 |
| November 2025 | $10,998 | $8,995–$13K | 482 |
| October 2025 | $11,830 | $9,900–$14K | 389 |
| September 2025 | $11,999 | $10K–$14K | 364 |
| August 2025 | $12,498 | $9,999–$14K | 304 |
2018 Kia Optima prices by state
Listed this year counts every 2018 Kia Optima first listed in 2026 (sold and active), with currently active cars as a floor. Typical price is the median of each car's latest asking price — or the average of active listings where this-year data is thin.
Keep exploring Optima prices
2018 Kia Optima · $10,995 typical · 528 listingsOther Kia Optima years
Live 2018 Kia Optima listings, priced by VIN
Every VIN links to a full market report: decode, active listings and the local price band. Shop 2017–2019 Kia Optima listings on VehiSales →.
More 2018 Kia prices
Own a 2018 Kia Optima? See what it's worth →
Frequently asked questions
Why do 2018 Kia Optima prices range from $5,993 to $17,045?
The spread comes down to configuration and mileage: higher-mileage, base-configuration examples sit near the low end, while low-mileage and premium configurations reach the top. Half of all listings fall between $8,995 and $12,995 — see the mileage and trim breakdowns above for where a specific vehicle lands.
How much should mileage change the price of a 2018 Kia Optima?
Expect roughly $1,000 less for every 10,000 miles on the odometer. A 60K-mile example should cost about $3,000 less than a 30K-mile one of the same trim — check the fair-price-by-mileage table above for your band.
How many 2018 Kia Optima are for sale right now?
528 in total, nearly all pre-owned. Counts refresh daily from live dealer inventory.
How we calculate these prices
We track 528 active listings for this vehicle across dealer sites nationwide, updated every day. Average and median are computed from real asking prices on live listings. We exclude the top and bottom 2% of prices to remove data errors, salvage titles, and monthly-payment figures posted as if they were sale prices. Prices reflect dealer asking prices — not final sale prices — and exclude taxes, fees, and incentives. Trim and mileage move the price more than any other factor; see the breakdowns above.
Want the original factory equipment and MSRP behind a specific car? Get the window sticker by VIN →
Shopping for this car?
Check individual VINs before you buy — decode the exact trim and mileage, see every active listing, and how each price compares to the local market.