Used 2018 GMC Sierra Price in the US
A used 2018 GMC Sierra in the US typically lists for $23,667–$32,497, with a median asking price of $27,990 across 2,044 active US dealer listings (as of 2026-08-30). The cheapest one listed right now is $8,766, a 2018 Fleet Base in Perrysburg, OH — below 95% of the market, so expect an older model year, a base trim or high mileage.
- Typical range
- $23,667 – $32,497
- Median
- $27,990
- Cheapest 5%
- under $17,144
- Cheapest listed now
- $8,766
Browse by model year
cheapest per year- All years
- 2026 · from $30,995
- 2025 · from $29,659
- 2024 · from $24,984
- 2023 · from $20,999
- 2022 · from $15,495
- 2021 · from $12,900
- 2020 · from $9,611
- 2019 · from $11,900
- 2018 · from $8,766
- 2017 · from $4,019
- 2016 · from $5,900
- 2015 · from $4,094
- 2014 · from $3,988
- 2013 · from $4,995
- 2012 · from $2,824
- 2011 · from $2,950
- 2010 · from $2,488
- 2009 · from $1,500
- 2008 · from $2,010
- 2007 · from $1,900
- 2006 · from $2,398
- 2005 · from $2,995
- 2004 · from $2,800
- 2003 · from $1,500
- 2002 · from $3,625
- 2001 · from $1,995
- 2000 · from $1,500
Cheapest 10 listed right now
ranked by price-
$8,7662018 GMC Sierra Fleet Base191,070 mi · Perrysburg, OH · Perrysburg Automall - VolkswagenView listing → -
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$9,9802018 GMC Sierra Fleet Base198,205 mi · Louisville, KY · Alpha Leasing Auto SalesView listing → -
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$10,9992018 GMC Sierra Fleet Base153,369 mi · Greensboro, NC · Uniworld Auto Sales LLC.View listing → -
$11,8092018 GMC Sierra Sle228,666 mi · Highland, MI · Feldman Chevrolet of HighlandView listing →
These are the bottom of the market, not the going rate — every one is priced below 95% of active listings. A typical used 2018 GMC Sierra asks $23,667–$32,497. Cars this far under usually carry an older model year, a base trim or high mileage.
Deals on the map
10 pinnedFAQ
How much does a used 2018 GMC Sierra cost?
A used 2018 GMC Sierra in the US typically lists for $23,667 to $32,497, with a median asking price of $27,990 across 2,044 active US dealer listings. Nine in ten are priced between $17,144 and $45,185 (as of 2026-08-30, source: UnderMarket Cars).
Is $28,000 a good price for a used 2018 GMC Sierra?
That sits at about the market median ($27,990) for a used 2018 GMC Sierra. Under $23,667 puts you in the cheapest quarter of active US listings and under $17,144 in the cheapest 5%; above $45,185 is the priciest 5% (as of 2026-08-30).
What is the cheapest used 2018 GMC Sierra for sale right now?
$8,766 — a 2018 GMC Sierra Fleet Base in Perrysburg, OH, $19,224 under the median (as of 2026-08-30).
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 2018 GMC Sierra price page at least twice a day. The data date shown on this page is 2026-08-30.
Explore more
Prices updated 2026-08-30. Data covers active dealer listings across the USA.