2018 Gmc Terrain prices in New Hampshire
The median asking price for a 2018 Gmc Terrain in New Hampshire is $15,495 based on 6 active listings.
As of July 25, 2026, the median asking price for a 2018 Gmc Terrain in New Hampshire is $15,495, based on 6 active dealer listings tracked by VinAssessment.
◷ Updated July 25, 2026 ▤ 6 active dealer listings, refreshed daily Methodology →
Typical: $14,239–$17,982 — the middle half of 6 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 Gmc Terrain
The $14,239–$17,982 typical range isn't randomness — two factors explain most of it:
Asking prices run about $19,119 at 30K–45K miles and fall to $12,295 over 105K miles — roughly $900 for every 10,000 miles.
The SLE typically asks $13,784, while the Denali asks $17,343 — same year, same market.
Find your mileage and trim in the configurator below.
Configure the exact car
Modelled from 240 real asking prices, adjusted for mileage and location. Not a formal appraisal.
2018 Gmc Terrain: a fair price for your mileage
A 2018 Gmc Terrain sheds roughly $900 for every 10,000 miles. Find your mileage below.
Fair price by mileage and trim
| Mileage | All listings | SLE | SLT | Denali |
|---|---|---|---|---|
| 30K–45K miles | $19,119 | $17,440 | $20,830 | $21,271 |
| 45K–60K miles | $18,494 | $16,627 | $19,136 | $21,729 |
| 60K–75K miles | $17,251 | $15,996 | $17,912 | $19,280 |
| 75K–90K miles | $15,988 | $14,567 | $16,417 | $18,348 |
| 90K–105K miles | $15,368 | $14,240 | $15,415 | $17,354 |
| Over 105K miles | $12,295 | $11,661 | $13,068 | $14,123 |
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 ⓘ |
|---|---|---|---|
| 30K–45K miles | 15 listings | $19,119 | $18K–$21K |
| 45K–60K miles | 27 listings | $18,494 | $16K–$20K |
| 60K–75K miles | 69 listings | $17,251 | $16K–$19K |
| 75K–90K miles | 84 listings | $15,988 | $14K–$17K |
| 90K–105K miles | 105 listings | $15,368 | $14K–$17K |
| Over 105K miles | 180 listings | $12,295 | $11K–$14K |
Same trim and condition assumed — mileage is the biggest lever after configuration. National data; New Hampshire prices track it closely.
2018 Gmc Terrain: price by trim
| Trim | Based on ⓘ | Median price ⓘ | Typical range ⓘ | Where it sits ⓘ |
|---|---|---|---|---|
| SLE | 240 listings | $13,784 | $12K–$16K | |
| SLT | 147 listings | $15,196 | $13K–$17K | |
| Denali | 101 listings | $17,343 | $16K–$19K |
National data; New Hampshire prices track it closely.
Price history
Median asking price by month — national · shaded band is the typical range (25th–75th percentile)
The median listing price for a 2018 Gmc Terrain is $14,998 (July 2026) — down 6.2% from $15,995 in August 2025.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| July 2026 | $14,998 | $13K–$17K | 638 |
| June 2026 | $14,994 | $13K–$18K | 750 |
| May 2026 | $14,995 | $13K–$17K | 786 |
| April 2026 | $14,990 | $13K–$17K | 736 |
| March 2026 | $14,956 | $13K–$17K | 862 |
| February 2026 | $14,848 | $13K–$16K | 816 |
| January 2026 | $14,795 | $13K–$17K | 723 |
| December 2025 | $14,859 | $13K–$17K | 543 |
| November 2025 | $14,900 | $13K–$17K | 434 |
| October 2025 | $15,690 | $14K–$18K | 488 |
| September 2025 | $15,995 | $14K–$18K | 387 |
| August 2025 | $15,995 | $14K–$18K | 454 |
2018 Gmc Terrain inventory across the U.S.
Keep exploring Terrain prices
2018 Gmc Terrain · $16,086 typical · 6 listingsOther Gmc Terrain years
Live 2018 Gmc Terrain listings, priced by VIN
Every VIN links to a full market report: decode, active listings and the local price band. Shop 2017–2019 Gmc Terrain listings on VehiSales →.
More 2018 Gmc prices
Frequently asked questions
Why do 2018 Gmc Terrain prices range from $13,883 to $18,987 in New Hampshire?
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 $14,239 and $17,982 — 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?
Expect roughly $900 less for every 10,000 miles on the odometer. A 60K-mile example should cost about $2,700 less than a 30K-mile one of the same trim — check the fair-price-by-mileage table above for your band.
Do Gmc Terrain prices in New Hampshire differ from the rest of the country?
Yes. The average in New Hampshire is $16,086, which is $1,083 above the national average of $15,003. Local supply, demand and transport costs all play a part.
How many 2018 Gmc Terrain are for sale in New Hampshire right now?
6 in total, nearly all pre-owned. Counts refresh daily from live dealer inventory.
How we calculate these prices
We track 6 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.
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