2018 Kia Optima Depreciation
A 8-year-old 2018 Kia Optima has lost about 54.8% of its roughly $22,600 original value. In the 2026 source cohort, it typically listed for around $10,986, with most listings between $7,996 and $14,526. Listed examples average 103,812 miles.

2018 Kia Optima Price by Mileage
What buyers actually pay at different odometer readings.
How Mileage Affects 2018 Kia Optima Price
Each dot is a real listing — price plotted against odometer reading.
| Mileage | Median price | Listings |
|---|---|---|
| 50k–75k mi | $14,684 | 25 |
| 75k–100k mi | $12,647 | 60 |
| 100k–130k mi | $10,245 | 69 |
| Over 130k mi | $7,813 | 40 |
What's a Good Price for a 2018 Kia Optima?
Great deal
Under $9,184
Typical
$9,184–$13,339
Overpriced
Above $13,339
Based on the middle 50% of listings — always adjust for mileage and condition.
Price Spread
Range across 200 listings.
Half of all listings fall between $9,184 and $13,339, with a median of $10,986.
2018 Kia Optima Efficiency & Specs
EPA fuel-economy and powertrain data.
Combined
28 MPG
City / Hwy
25 / 34
Fuel / year
$2,250
Fuel
Regular
Engine
1.6L 4-cyl
EPA class
Large Cars
Depreciation by Trim
See how each 2018 Kia Optima trim holds its value.
How the 2018 Kia Optima Compares to Other Years
At 54.8% depreciation, the 2018 Kia Optima sits among its neighbors on the depreciation curve. The one-year-newer 2019 has lost 49.9% (around $12,575), so stepping up a model year costs roughly $1,589 more. The older 2017 sits at 60.5% (around $9,794), so dropping back a year saves about $1,192. Buying one model year newer or older is one of the easiest ways to trade purchase price against age and remaining warranty.
Safety Ratings
NHTSA crash test ratings for the 2018 Kia Optima.
Known Issues & Complaints
228 NHTSA complaints, 2 recalls reported.
ENGINE
90 complaintsI’ve had my 2018 kia optima for round about two years.I only got this car because they refused to replace my previous engine on my 2015 Kia optima,even though I had a warranty but that’s another story(Kia on the Blvd).This car have given me
ELECTRICAL SYSTEM
27 complaintsI am submitting this complaint regarding ongoing and persistent mechanical issues with my vehicle since the time of purchase. The vehicle has repeatedly shut off unexpectedly, creating a serious safety concern. Initially, I suspected the is
UNKNOWN OR OTHER
22 complaints2018 Kia Optima Dealer Ed Voyles Kia Smyrna began Recall SC340. Vehicle drove in running. Dealer flashed ECM software, discovered non-original engine/ECU. Vehicle now won’t start. Dealer document states 'will not start after recall.' Dealer
POWER TRAIN
18 complaintsThere is already the theta 2 campaign on my Kia optima but Kia is not upholding their warranty for a new engine. Kia customer care told me that untill my car actually throws a rod then they will not fix it. So I could be doing 80 down the f
ENGINE AND ENGINE COOLING
12 complaintsThe contact owns a 2018 Kia Optima. The contact stated that while driving at an undisclosed speed, there was an abnormal odor and a knocking sound coming from the engine. The vehicle was taken to the dealer; however, the dealer was unable t
STEERING
12 complaintsSteering column coupler went bad. Unable to swap out the coupler alone ($12 part) and had to get a whole new column (over $1200). Some of the Kia's around this one's make and model were recalled but not this one. Without this repair driving
Top Issues
- ENGINE
- ELECTRICAL SYSTEM
- UNKNOWN OR OTHER
- POWER TRAIN
- ENGINE AND ENGINE COOLING
Buyer Red Flags
- !Recall 18V161000 (HYBRID PROPULSION SYSTEM): Kia Motors America (Kia) is recalling certain 2017-2018 Kia Optima hybrid vehicles. These vehicles are equipped with a Voltage Protection Device (VPD), designed to protect the high
- !Recall 23V594000 (LATCHES/LOCKS/LINKAGES): Kia America, Inc. (Kia) is recalling certain 2016-2017 Rio, 2016-2018 Optima, 2017-2018 Optima Hybrid and Optima Plug-in Hybrid vehicles. The trunk latch base may crack, preventing
Frequently Asked Questions
How much is a 2018 Kia Optima worth?
A 2018 Kia Optima is typically worth around $10,986, with most listings falling between $7,996 and $14,526. The single biggest swing factor is mileage — listed examples average about 103,812 miles, and each additional 10,000 miles shaves a few percent off the price. Condition, accident history, trim, and how many owners a car has had move the number from there. Treat the median as a fair starting point and adjust up for a clean, low-mileage, one-owner car or down for higher mileage and any reported damage.
How much has the 2018 Kia Optima depreciated?
The 2018 Kia Optima has lost about 54.8% of its original $22,600 base MSRP — roughly $12,385 in value, after adjusting listing prices to typical mileage for the age. Most of a car's lifetime depreciation happens in its earliest years, so a vehicle of this age has usually weathered the steepest part of the curve already. That's what makes a well-kept example at this age an efficient buy: you let the original owner absorb the fastest depreciation, then enjoy a much slower decline from here.
How many miles does a used 2018 Optima have?
Listed 2018 Optimas average about 103,812 miles, with most between 74,759 and 134,809. As a rule of thumb, "average" mileage for any car is roughly 12,000 miles per year of age, so compare a specific listing against that benchmark. A below-average odometer commands a premium and an above-average one a discount, but a higher-mileage car with complete service records and one owner can be a better buy than a low-mileage car with gaps in its history. Consistent maintenance does more for a car's remaining lifespan than a low number on the odometer alone.
What is a good price for a 2018 Kia Optima?
For a 2018 Kia Optima, anything under $9,184 is a strong deal, $9,184 to $13,339 is the typical range where most cars trade, and above $13,339 is on the expensive side — those higher prices usually buy lower mileage, a certified warranty, or a premium trim. Always weigh the asking price against the car's specific mileage and condition rather than the sticker alone: a slightly higher price for a clean, one-owner, accident-free example is often money well spent. And treat a listing priced well below the range as a prompt to dig deeper — unusually cheap cars almost always have a reason, whether it's high mileage, accident history, or a branded title.
Methodology
Figures for the 2018 Kia Optima are computed from 200 real used-car listings. Each asking price is normalized to a standard 12,000 miles per year for the car's age, adjusted by a 5% asking-to-sale estimate, and compared against the original base MSRP for that VIN's trim. Full methodology. Updated August 2026.