Used 2021 Mercedes-Benz GLS-Class Price in the US
A used 2021 Mercedes-Benz GLS-Class in the US typically lists for $36,715–$56,995, with a median asking price of $43,392 across 117 active US dealer listings (as of 2026-08-29). The cheapest one listed right now is $26,000, a 2021 Gls450-4m in STILLWATER, OK — below 95% of the market, so expect an older model year, a base trim or high mileage.
- Typical range
- $36,715 – $56,995
- Median
- $43,392
- Cheapest 5%
- under $30,700
- Cheapest listed now
- $26,000
Browse by model year
cheapest per yearCheapest 10 listed right now
ranked by price-
$26,0002021 Mercedes-Benz GLS-Class Gls450-4m106,724 mi · STILLWATER, OK · Wilson GMCView listing →
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$27,9272021 Mercedes-Benz GLS-Class Gls450-4m112,191 mi · Boerne, TX · Ford of BoerneView listing →
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$29,5002021 Mercedes-Benz GLS-Class Gls450-4m91,003 mi · Saint Cloud, MN · Minnesota Truck HeadquartersView listing → -
$29,9882021 Mercedes-Benz GLS-Class Gls450-4m117,817 mi · Tampa, FL · Veterans FordView listing →
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$30,4482021 Mercedes-Benz GLS-Class Gls450-4m108,265 mi · North Olmsted, OH · Bentley ClevelandView listing →
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$30,4902021 Mercedes-Benz GLS-Class Gls450-4m80,396 mi · Pinebrook, NJ · Paul Miller ToyotaView listing →
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$30,7522021 Mercedes-Benz GLS-Class Gls450-4m71,351 mi · West Hempstead, NY · NASSAU AUTO MALLView listing → -
$32,4302021 Mercedes-Benz GLS-Class Gls450-4m65,538 mi · Yonkers, NY · Yonkers Auto GalleryView listing →
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$32,4912021 Mercedes-Benz GLS-Class Gls450-4m90,098 mi · Dallas, TX · Top Line Auto Inc.View listing → -
$32,6292021 Mercedes-Benz GLS-Class Gls450-4m85,253 mi · Oklahoma City, OK · Bob Moore Buick GMCView 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 Mercedes-Benz GLS-Class asks $36,715–$56,995. 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 2021 Mercedes-Benz GLS-Class cost?
A used 2021 Mercedes-Benz GLS-Class in the US typically lists for $36,715 to $56,995, with a median asking price of $43,392 across 117 active US dealer listings. Nine in ten are priced between $30,700 and $91,595 (as of 2026-08-29, source: UnderMarket Cars).
Is $43,000 a good price for a used 2021 Mercedes-Benz GLS-Class?
That sits at about the market median ($43,392) for a used 2021 Mercedes-Benz GLS-Class. Under $36,715 puts you in the cheapest quarter of active US listings and under $30,700 in the cheapest 5%; above $91,595 is the priciest 5% (as of 2026-08-29).
What is the cheapest used 2021 Mercedes-Benz GLS-Class for sale right now?
$26,000 — a 2021 Mercedes-Benz GLS-Class Gls450-4m in STILLWATER, OK, $17,392 under the median (as of 2026-08-29).
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 Mercedes-Benz GLS-Class price page at least twice a day. The data date shown on this page is 2026-08-29.
Explore more
Prices updated 2026-08-29. Data covers active dealer listings across the USA.