Used 2021 GMC Terrain Price in the US
A used 2021 GMC Terrain in the US typically lists for $16,295–$20,336, with a median asking price of $18,568 across 443 active US dealer listings (as of 2026-09-01). The cheapest one listed right now is $7,750, a 2021 SLT in Magnolia, TX — below 95% of the market, so expect an older model year, a base trim or high mileage.
- Typical range
- $16,295 – $20,336
- Median
- $18,568
- Cheapest 5%
- under $13,007
- Cheapest listed now
- $7,750
Browse by model year
cheapest per year- All years
- 2027 · from $29,535
- 2026 · from $23,500
- 2025 · from $6,878
- 2024 · from $8,950
- 2023 · from $12,394
- 2022 · from $11,794
- 2021 · from $7,750
- 2020 · from $6,990
- 2019 · from $5,995
- 2018 · from $5,995
- 2017 · from $3,200
- 2016 · from $3,799
- 2015 · from $2,467
- 2014 · from $1,995
- 2013 · from $2,000
- 2012 · from $2,500
- 2011 · from $1,900
- 2010 · from $3,599
Cheapest 10 listed right now
ranked by price-
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$11,7502021 GMC Terrain SLT186,955 mi · Anderson, IN · Ed Martin Chrysler Dodge Jeep RAMView listing →
These are the bottom of the market, not the going rate — every one is priced below 95% of active listings. A typical used 2021 GMC Terrain asks $16,295–$20,336. Cars this far under usually carry an older model year, a base trim or high mileage.
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10 pinnedFAQ
How much does a used 2021 GMC Terrain cost?
A used 2021 GMC Terrain in the US typically lists for $16,295 to $20,336, with a median asking price of $18,568 across 443 active US dealer listings. Nine in ten are priced between $13,007 and $23,626 (as of 2026-09-01, source: UnderMarket Cars).
Is $19,000 a good price for a used 2021 GMC Terrain?
That sits at about the market median ($18,568) for a used 2021 GMC Terrain. Under $16,295 puts you in the cheapest quarter of active US listings and under $13,007 in the cheapest 5%; above $23,626 is the priciest 5% (as of 2026-09-01).
What is the cheapest used 2021 GMC Terrain for sale right now?
$7,750 — a 2021 GMC Terrain SLT in Magnolia, TX, $10,818 under the median (as of 2026-09-01).
Are these MSRP or real asking prices?
Real asking prices from active US dealer listings, deduplicated by VIN — not manufacturer MSRP. They already reflect dealer discounts, and they exclude tax, title, registration and dealer fees.
How often are prices updated?
UnderMarket Cars refreshes US dealer listings continuously and re-generates this used 2021 GMC Terrain price page at least twice a day. The data date shown on this page is 2026-09-01.
Explore more
Prices updated 2026-09-01. Data covers active dealer listings across the USA.