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2018 GMC Terrain prices in the U.S.
$14,039
Median pre-owned asking price
580 pre-owned listings · Updated September 9, 2026
Price your exact car
National price overview
Typical asking price range
$11,998 – $16,770 All 589 listings · Middle 50% of asking pricesMedian asking price
$14,083Trim, mileage and condition change what a comparable vehicle costs.
As of September 9, 2026, the median asking price for a used 2018 GMC Terrain in the U.S. is $14,039, based on 580 active dealer listings tracked by VinAssessment.
Price range, sample and methodology details
The median pre-owned asking price for a 2018 GMC Terrain in the U.S. is $14,039 based on 580 pre-owned listings (of 589 total).
Based on 589 active dealer listings, refreshed daily.
30-day asking price change: −$137.
Typical: $11,998–$16,770 — the middle half of 589 asking prices
Median $14,083
$8,495 low
$22K high
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% to reduce the influence of extreme values. This does not verify title status or guarantee that every erroneous listing is excluded.
$14,039
Pre-owned median (580)
103,095
Average mileage
What moves the price
Mileage
Asking prices run about $19,598 at 30K–45K miles and fall to $12,270 over 105K miles — roughly $1,000 for every 10,000 miles. These are different vehicles; trim, condition and equipment also vary.
Observed spread: up to $7,328Trim
The SLE typically asks $13,304, while the Denali asks $18,052 — same year, same market.
Observed spread: up to $4,748Location
Typical asking prices are $12,997 in New Jersey but $17,493 in Idaho. These are different listing samples, not a measured location adjustment for the same vehicle.
Observed spread: up to $4,496About these price differences
The $11,998–$16,770 typical range isn't randomness — three factors explain most of it:
Biggest factor in these observed spreads: Mileage. These groups contain different vehicles.
Find your mileage and trim in the configurator below.
Configure the exact car
Choose a state and trim once to update the connected price tables and charts for a 2018 GMC Terrain. Mileage adjusts the estimate only.
Trim
Total miles the car has already driven, as shown on its odometer.
mi
Estimated asking price · All trims
$14,083
$11,998
–
$16,770
589 listings · Nationwide
ⓘ This is a modelled estimate based on current listings and market data. Actual prices may vary.
Estimate assumptions
at typical mileage, nationwide
Modelled from 589 real asking prices, adjusted for mileage and location. An illustrative estimate from mixed listing groups, not matched vehicles. Not a formal appraisal.
Live 2018 GMC Terrain listings, priced by VIN
Compared with all listings
All-listings median $14,083
2018 GMC Terrain
SLE
$8,988
VIN 3GKALMEV3JL325841
−$5,095 · vs all-listings median
2018 GMC Terrain
SLE
$10,999
VIN 3GKALMEV1JL374102
−$3,084 · vs all-listings median
2018 GMC Terrain
SLE
$10,536
VIN 3GKALTEV2JL299081
−$3,547 · vs all-listings median
View 9 more priced VINs
- SLE VIN 3GKALNEU5JL253702 $10,995 −$3,088 vs median
- SLE VIN 3GKALMEV4JL363658 $10,995 −$3,088 vs median
- SLT VIN 3GKALPEV6JL320540 $11,780 −$2,303 vs median
- SLT VIN 3GKALPEX2JL295492 $11,416 −$2,667 vs median
- SLE VIN 3GKALTEV7JL157549 $12,900 −$1,183 vs median
- SLE VIN 3GKALMEV5JL402029 $13,000 −$1,083 vs median
- SLT VIN 3GKALVEX5JL256934 $13,199 −$884 vs median
- SLT VIN 3GKALPEV8JL356648 $15,400 +$1,317 vs median
- Denali VIN 3GKALXEX5JL237165 $15,900 +$1,817 vs median
Price differences are not deal ratings. Compare equipment, mileage and vehicle history before judging a price.
Every VIN links to a full market report: decode, active listings and the local price band.
2018 GMC Terrain: a fair price for your mileage
Mileage means the miles recorded on the odometer. Compare asking prices in your mileage band, then select a trim — the equipment version — to narrow the comparison where data is available.
Across the national mileage bands, the overall difference is roughly $1,000 per 10,000 miles. These are different vehicles, not depreciation of the same car.
Region · trim United States · All trims
Active listings 589
Median asking price $14,083
Mileage means the total miles on the odometer. Each point shows the median asking price for a mileage band; shaded areas show the middle 50% of prices.
Swipe the chart horizontally to see every mileage band.
Compare all trims at the same mileage
Compare like-for-like mileage
United States · all states · September 9, 2026
Read across a row to compare trims at a similar odometer reading. Each price is the median asking price for that group, not a valuation of your exact car.
Scroll sideways to compare all trims. Mileage stays visible on the left.
| Mileage (odometer) | All listings | SLE | SLT | Denali |
|---|---|---|---|---|
| 30K–45K miles | $19,598 | $16,995 | $20,966 | $19,574 |
| 45K–60K miles | $18,147 | $17,541 | $19,617 | $21,005 |
| 60K–75K miles | $17,202 | $15,539 | $18,223 | $19,807 |
| 75K–90K miles | $15,995 | $14,840 | $17,195 | $18,347 |
| 90K–105K miles | $14,498 | $13,506 | $14,959 | $17,469 |
| Over 105K miles | $12,270 | $11,736 | $13,029 | $14,219 |
“—” means insufficient data: at least 3 listings per trim and mileage band, or 5 for all trims combined. Equipment, condition and location can still differ within a row.
Counts cover the selected region and trim, including listings without usable mileage. Thin mileage bands and rare or unknown trims may be omitted from the chart.
View the full national mileage price table
Fair price by mileage — all versions combined
| Mileage ⓘ | Based on ⓘ | Fair price ⓘ | Typical range ⓘ |
|---|---|---|---|
| 30K–45K miles | 15 listings | $19,598 | $17K–$21K |
| 45K–60K miles | 34 listings | $18,147 | $17K–$20K |
| 60K–75K miles | 72 listings | $17,202 | $16K–$20K |
| 75K–90K miles | 76 listings | $15,995 | $15K–$18K |
| 90K–105K miles | 108 listings | $14,498 | $13K–$16K |
| Over 105K miles | 282 listings | $12,270 | $11K–$14K |
United States — all states. These bands combine different trims, conditions and listing histories. They do not hold trim or condition constant.
2018 GMC Terrain: price by trim
United States · all states · September 9, 2026. Counts and prices below are national totals for each trim. The shared market filters update this table for your selected state and highlight your trim.
| Trim | Based on ⓘ | Median price ⓘ | Typical range ⓘ | Where it sits ⓘ |
|---|---|---|---|---|
| SLE | 324 listings | $13,304 | $11K–$15K | |
| SLT | 150 listings | $14,720 | $13K–$17K | |
| Denali | 114 listings | $18,052 | $16K–$20K |
Understand the differences
2018 GMC Terrain: VIN configurations and specifications
Multiple VIN patterns can share the same trim. Compare their recorded equipment, then open a specification page for the full details.
-
SLT AWD 1.5L 4-cyl · AWD VIN pattern: 3GKALVEV · year code J$13,512 Median asking price · U.S. 33 priced listings · September 6, 2026
-
Denali 2L 4-cyl · FWD VIN pattern: 3GKALSEX · year code J$17,680 Median asking price · U.S. 50 priced listings · September 6, 2026
-
SLE AWD 2L 4-cyl · AWD VIN pattern: 3GKALTEX · year code J$14,495 Median asking price · U.S. 38 priced listings · September 6, 2026
-
SLT 2L 4-cyl · FWD VIN pattern: 3GKALPEX · year code J$15,990 Median asking price · U.S. 32 priced listings · September 6, 2026
Show 11 more configurations
-
SLT AWD 2L 4-cyl · AWD VIN pattern: 3GKALVEX · year code J$15,380 Median asking price · U.S. 49 priced listings · September 6, 2026
-
Denali AWD 2L 4-cyl · AWD VIN pattern: 3GKALXEX · year code J$17,500 Median asking price · U.S. 91 priced listings · September 6, 2026
-
SLE 1.5L 4-cyl · FWD VIN pattern: 3GKALMEV · year code J$12,989 Median asking price · U.S. 182 priced listings · September 6, 2026
-
SLT Diesel 1.6L 4-cyl · FWD VIN pattern: 3GKALREU · year code J265 VINs in our database Observed VINs, not production totals
-
SLT Diesel AWD 1.6L 4-cyl · AWD VIN pattern: 3GKALWEU · year code J$12,999 Median asking price · U.S. 6 priced listings · September 6, 2026
-
SLT 1.5L 4-cyl · FWD VIN pattern: 3GKALPEV · year code J$13,999 Median asking price · U.S. 44 priced listings · September 6, 2026
-
SLE 2L 4-cyl · FWD VIN pattern: 3GKALMEX · year code J$13,495 Median asking price · U.S. 32 priced listings · September 6, 2026
-
SL 1.5L 4-cyl · FWD VIN pattern: 3GKALLEV · year code J54 VINs in our database Observed VINs, not production totals
-
SLE AWD 1.5L 4-cyl · AWD VIN pattern: 3GKALTEV · year code J$13,090 Median asking price · U.S. 88 priced listings · September 6, 2026
-
SLE Diesel AWD 1.6L 4-cyl · AWD VIN pattern: 3GKALUEU · year code J$13,995 Median asking price · U.S. 10 priced listings · September 6, 2026
-
SLE Diesel 1.6L 4-cyl · FWD VIN pattern: 3GKALNEU · year code J$11,995 Median asking price · U.S. 9 priced listings · September 6, 2026
Where these specifications come from
Specifications combine decoded VIN data, including NHTSA vPIC , with inventory records. If decoding does not identify a trim, a recorded inventory trim may be shown. VIN patterns do not confirm every installed option.
Counts describe observed VINs in our database, not factory production totals. Prices are median asking prices from qualifying U.S. listings, not original MSRP. Check the vehicle’s build sheet for exact equipment.
FACTORY REFERENCE
2018 GMC Terrain factory brochure
Model-year reference for features and equipment. Actual VIN equipment may differ.
No verified factory brochure is currently listed for this exact model year.
Need equipment for a specific vehicle? Look up its factory window sticker →
Price history
Change state or trim for this report →
View national price history · all trims
Median asking price by month — U.S., all trims · shaded band is the typical range (25th–75th percentile)
The median listing price for a 2018 GMC Terrain is $14,620 (September 2026) — down 8.6% from $15,990 in September 2025.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| September 2026 | $14,620 | $12K–$17K | 391 |
| August 2026 | $14,595 | $12K–$17K | 875 |
| July 2026 | $14,842 | $13K–$17K | 846 |
| June 2026 | $14,900 | $13K–$17K | 788 |
| May 2026 | $14,994 | $13K–$17K | 800 |
| April 2026 | $14,990 | $13K–$17K | 741 |
| March 2026 | $14,953 | $13K–$17K | 864 |
| February 2026 | $14,798 | $13K–$16K | 820 |
| January 2026 | $14,798 | $13K–$17K | 731 |
| December 2025 | $14,859 | $13K–$17K | 543 |
| November 2025 | $14,898 | $13K–$17K | 436 |
| October 2025 | $15,665 | $14K–$18K | 490 |
| September 2025 | $15,990 | $14K–$18K | 296 |
2018 GMC Terrain prices by state
See how asking prices vary across states. Looking for a 2018 GMC Terrain for sale near you? Open your state's price guide to compare its market, then follow the local listings link to browse available vehicles.
United States · all trims · snapshot September 9, 2026. Explore state markets below. Prices and counts cover all trims in each state; the full comparison table remains available below the map.
Explore 44 more state markets
Arizona
Typical asking price
$14,956
- Active listings
- 4
- Listed this year
- 71
Not enough active listings for a state price report.
Delaware
Typical asking price
$15,995
- Active listings
- 4
- Listed this year
- 18
Not enough active listings for a state price report.
Massachusetts
Typical asking price
$15,298
- Active listings
- 4
- Listed this year
- 52
Not enough active listings for a state price report.
Connecticut
Typical asking price
$14,397
- Active listings
- 3
- Listed this year
- 45
Not enough active listings for a state price report.
Maryland
Typical asking price
$16,101
- Active listings
- 3
- Listed this year
- 39
Not enough active listings for a state price report.
New Hampshire
Typical asking price
$14,750
- Active listings
- 3
- Listed this year
- 30
Not enough active listings for a state price report.
North Dakota
Typical asking price
$14,995
- Active listings
- 3
- Listed this year
- 24
Not enough active listings for a state price report.
Utah
Typical asking price
$14,524
- Active listings
- 3
- Listed this year
- 26
Not enough active listings for a state price report.
Vermont
Typical asking price
$13,999
- Active listings
- 3
- Listed this year
- 9
Not enough active listings for a state price report.
West Virginia
Typical asking price
$14,938
- Active listings
- 3
- Listed this year
- 17
Not enough active listings for a state price report.
Wyoming
Typical asking price
$14,991
- Active listings
- 3
- Listed this year
- 6
Not enough active listings for a state price report.
Hawaii
Typical asking price
$14,500
- Active listings
- 2
- Listed this year
- 5
Not enough active listings for a state price report.
Maine
Typical asking price
$13,987
- Active listings
- 2
- Listed this year
- 23
Not enough active listings for a state price report.
Montana
Typical asking price
$14,972
- Active listings
- 2
- Listed this year
- 22
Not enough active listings for a state price report.
New Mexico
Typical asking price
$15,020
- Active listings
- 2
- Listed this year
- 36
Not enough active listings for a state price report.
Rhode Island
Typical asking price
$15,988
- Active listings
- 2
- Listed this year
- 13
Not enough active listings for a state price report.
South Dakota
Typical asking price
$12,998
- Active listings
- 2
- Listed this year
- 25
Not enough active listings for a state price report.
Alaska
Typical asking price
$16,961
- Active listings
- 0
- Listed this year
- 5
Not enough active listings for a state price report.
View the U.S. inventory map
What does this map show?
The numbers are active listings, not prices. Badges mark the 8 busiest mapped states to keep the map readable; other states can also have listings.
Hover over a state or focus it with your keyboard for details. Click a linked state or its number to open that state's price page.
State details will appear here. On a phone, tap a linked state to open its prices; use the full table for easier browsing.
Scroll the map sideways on smaller screens. Numbers stay large enough to read.
Most active listings
Other states with active listings
No active listings or insufficient data
Alaska and Hawaii are not drawn on this map. Where qualifying data is available, they appear in the full state table. Grey does not necessarily mean no cars are for sale.
View all states and prices
Listed this year counts every 2018 GMC Terrain 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.
EXPLORE THE YEARS
Other GMC Terrain years
Same model, a different chapter. Start with a nearby year, or open the complete timeline.
An earlier model year
2017
GMC Terrain
Typical asking price
$11,350
Explore this year →
You are here
2018
GMC Terrain
Typical asking price
$14,083
Your current report
A newer model year
2019
GMC Terrain
Typical asking price
$15,595
Explore this year →
Explore all 17 other model years
Pick a year to open its price report. Prices compare different vehicles and equipment, not the changing value of one car.
Nearby model years
2014
$8,358
2015
$8,998
2016
$10,499
2017
$11,350
2019
$15,595
2020
$17,975
2021
$18,916
2022
$21,995
More model years
MEET THE REST OF THE LINEUP
More 2018 GMC prices
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Explore this model →Prices shown for other models are average asking prices in the national snapshot. Photos are representative; trim and equipment vary.
What would a 2018 GMC Terrain cost per month?
Estimate the monthly payment on a $13,304 vehicle. Move the numbers to match your own loan.
10% down
7.0% is an illustrative starting rate — use your own lender quote.
Loan term
Estimated monthly payment
$237
per month
60 months · 7.0% APR · $1,330 down
Amount financed
$11,974
Total interest
$2,246
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.
Before you buy
A few important steps can help you buy with confidence.
- Check title and accident history
- Arrange an independent inspection
- Review factory equipment
- Check recalls by VIN
Frequently asked questions
Why do 2018 GMC Terrain prices range from $8,495 to $21,702?
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 $11,998 and $16,770 — see the mileage and trim breakdowns above for where a specific vehicle lands.
How much should mileage change the price of a 2018 GMC Terrain?
Across the lowest- and highest-mileage groups, asking prices differ by roughly $1,000 per 10,000 miles. These groups contain different vehicles: this is not a same-trim adjustment or a forecast for one car. Compare the mileage and trim tables, then check condition, equipment and vehicle history.
How many 2018 GMC Terrain are for sale right now?
589 in total, nearly all pre-owned. Counts refresh daily from live dealer inventory.
Is this the trade-in value or private-party value of my 2018 GMC Terrain?
These figures describe dealer asking prices, not trade-in offers, private-party sale values or completed sale prices. Use them to compare advertised vehicles. To find out what a buyer or dealer would pay for your car, request an offer that takes its mileage, condition, equipment and history into account.
How we calculate these prices
We track 589 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? Pull the original window sticker by VIN →
Own a 2018 GMC Terrain? See what it's worth →
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