Cheapest · Used 2021 GMC Terrain
Rank #1 / 285 listings
Cheapest Used 2021 GMC Terrain for Sale in the US
The cheapest used 2021 GMC Terrain in the US today costs $9,250 — a 2021 SLT located in Magnolia, TX. We track 285 active listings; the median price is $18,984, so the top deal is $9,734 under the median.
Browse by model year
cheapest per year- All years
- 2027 · from $31,569
- 2026 · from $6,026
- 2025 · from $22,999
- 2024 · from $8,950
- 2023 · from $1,795
- 2022 · from $9,500
- 2021 · from $9,250
- 2020 · from $2,500
- 2019 · from $6,499
- 2018 · from $3,835
- 2017 · from $2,601
- 2016 · from $3,850
- 2015 · from $1,500
- 2014 · from $2,500
- 2013 · from $2,000
- 2012 · from $1,600
- 2011 · from $2,150
- 2010 · from $4,000
Top 10 cheapest listings
ranked by price
Deals on the map
10 pinnedFAQ
How much does the cheapest used 2021 GMC Terrain cost?
$9,250 — a 2021 SLT in Magnolia, TX (as of 2026-07-19).
What is the median price of a used 2021 GMC Terrain?
$18,984 across 285 US dealer active listings.
How often are prices updated?
Listings and prices refresh continuously; this page is re-generated at least twice a day.
Explore more
Prices updated 2026-07-19. Data covers active dealer listings across the USA.