2018 Kia Optima prices in Washington
The median asking price for a 2018 Kia Optima in Washington is $12,695 based on 9 active listings.
As of September 9, 2026, the median asking price for a 2018 Kia Optima in Washington is $12,695, based on 9 active dealer listings tracked by VinAssessment.
◷ Updated September 9, 2026 ▤ 9 active dealer listings, refreshed daily ⛭ Generation: 2015–2020
Typical: $10,198–$15,180 — the middle half of 9 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 $10,198–$15,180 typical range isn't randomness — one factor explains most of it:
Asking prices run about $16,554 at 15K–30K miles and fall to $9,499 over 105K miles — roughly $800 for every 10,000 miles.
Find your mileage and trim in the configurator below.
Configure the exact car
Modelled from 9 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 $11,543 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.
2018 Kia Optima: a fair price for your mileage
A 2018 Kia Optima sheds roughly $800 for every 10,000 miles. Find your mileage below.
| Mileage ⓘ | Based on ⓘ | Fair price ⓘ | Typical range ⓘ |
|---|---|---|---|
| 15K–30K miles | 5 listings | $16,554 | $16K–$17K |
| 30K–45K miles | 17 listings | $16,025 | $15K–$19K |
| 45K–60K miles | 15 listings | $15,899 | $13K–$16K |
| 60K–75K miles | 55 listings | $13,900 | $13K–$15K |
| 75K–90K miles | 87 listings | $13,298 | $12K–$15K |
| 90K–105K miles | 94 listings | $11,925 | $10K–$13K |
| Over 105K miles | 219 listings | $9,499 | $7,999–$11K |
Same trim and condition assumed — mileage is the biggest lever after configuration. National data; Washington prices track it closely.
Trim-level pricing isn't reliable enough for this model yet — mileage and configuration explain most of the spread above.
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 →.
Price history
Median asking price by month — national · shaded band is the typical range (25th–75th percentile)
The median listing price for a 2018 Kia Optima is $11,995 (September 2026), unchanged from September 2025.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| September 2026 | $11,995 | $9,915–$14K | 312 |
| August 2026 | $11,675 | $9,500–$14K | 690 |
| July 2026 | $11,495 | $9,500–$14K | 711 |
| June 2026 | $11,492 | $9,184–$14K | 711 |
| May 2026 | $11,494 | $9,357–$14K | 669 |
| April 2026 | $11,070 | $9,181–$13K | 560 |
| March 2026 | $11,712 | $9,468–$14K | 768 |
| February 2026 | $11,324 | $9,499–$14K | 717 |
| January 2026 | $10,996 | $8,995–$13K | 688 |
| December 2025 | $11,002 | $9,144–$13K | 602 |
| November 2025 | $10,998 | $8,995–$13K | 482 |
| October 2025 | $11,830 | $9,900–$14K | 389 |
| September 2025 | $11,998 | $9,999–$14K | 273 |
2018 Kia Optima inventory across the U.S.
Factory configurations of the 2018 Kia Optima
24 factory configurations left the plant as a 2018 Kia Optima — the most common are below, each decoded into its own build sheet from the VIN pattern.
Keep exploring Optima prices
2018 Kia Optima · $12,695 typical · 9 listingsOther Kia Optima years
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 $6,786 to $16,276 in Washington?
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 $10,198 and $15,180 — 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 $800 less for every 10,000 miles on the odometer. A 60K-mile example should cost about $2,400 less than a 30K-mile one of the same trim — check the fair-price-by-mileage table above for your band.
Do Kia Optima prices in Washington differ from the rest of the country?
Yes. The average in Washington is $12,338, which is $769 above the national average of $11,569. Local supply, demand and transport costs all play a part.
How many 2018 Kia Optima are for sale in Washington right now?
9 in total, nearly all pre-owned. Counts refresh daily from live dealer inventory.
How we calculate these prices
We track 9 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 reduce the influence of extreme values. This does not verify title status or guarantee that every erroneous listing is excluded. 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.