Live US dealer listings Median-priced benchmark Updated 2026-10-19
Market price · Used 2020 Mercedes-Benz S-Class 178 listings tracked

Used 2020 Mercedes-Benz S-Class Price in the US

A used 2020 Mercedes-Benz S-Class in the US typically lists for $35,084–$55,664, with a median asking price of $40,239 across 178 active US dealer listings (as of 2026-10-19). The cheapest one listed right now is $21,900, a 2020 S 450-4M in Joplin, MO — below 95% of the market, so expect high mileage, a base trim or a branded title — check the vehicle history.

Used 2020 Mercedes-Benz S-Class · asking prices178 listings
$20k$90k
Typical range
$35,084 – $55,664
Median
$40,239
Cheapest 5%
under $28,049
Cheapest listed now
$21,900

Browse by model year

typical price per year
More years (20)

Cheapest 10 listed right now

ranked by price
  1. $21,900
    2020 Mercedes-Benz S-Class S 450-4M
    101,502 mi · Joplin, MO · Used Cars Joplin
    View listing →
  2. 2020 Mercedes-Benz S-Class
    $22,487
    2020 Mercedes-Benz S-Class S450
    148,522 mi · Hoover, AL · Mercedes-Benz of Birmingham
    View listing →
  3. $22,990
    2020 Mercedes-Benz S-Class S 450-4M
    106,442 mi · Bloomingdale, NJ · Prime Auto Imports
    View listing →
  4. 2020 Mercedes-Benz S-Class
    $25,950
    2020 Mercedes-Benz S-Class S 450-4M
    99,536 mi · Riverside, CA · Alsbou Motors - Riverside
    View listing →
  5. 2020 Mercedes-Benz S-Class
    $26,571
    2020 Mercedes-Benz S-Class S560-4M
    107,794 mi · Arlington, VA · Merlex Auto Group · +4 more like it here
    View listing →
  6. 2020 Mercedes-Benz S-Class
    $26,966
    2020 Mercedes-Benz S-Class S560-4M
    122,806 mi · Arlington, VA · Merlex Auto Group
    View listing →
  7. 2020 Mercedes-Benz S-Class
    $27,186
    2020 Mercedes-Benz S-Class S560-4M
    111,915 mi · Manassas, VA · Auto Group
    View listing →
  8. $27,959
    2020 Mercedes-Benz S-Class S560-4M
    97,574 mi · Plantation, FL · Taverna Chrysler Jeep Dodge Ram
    View listing →
  9. 2020 Mercedes-Benz S-Class
    $28,000
    2020 Mercedes-Benz S-Class S450
    86,063 mi · Lake Wales, FL · Weikert Ford Inc.
    View listing →
  10. 2020 Mercedes-Benz S-Class
    $28,058
    2020 Mercedes-Benz S-Class S 450-4M
    76,338 mi · Suffern, NY · Rockland Motorsport
    View listing →

These are the bottom of the market, not the going rate — every one is priced below 95% of active listings. A typical used 2020 Mercedes-Benz S-Class asks $35,084–$55,664. Cars this far under: expect high mileage, a base trim or a branded title — check the vehicle history.

FAQ

How much does a used 2020 Mercedes-Benz S-Class cost?

A used 2020 Mercedes-Benz S-Class in the US typically lists for $35,084 to $55,664, with a median asking price of $40,239 across 178 active US dealer listings. Nine in ten are priced between $28,049 and $88,973 (as of 2026-10-19, source: UnderMarket Cars).

Is $40,000 a good price for a used 2020 Mercedes-Benz S-Class?

That sits at about the market median ($40,239) for a used 2020 Mercedes-Benz S-Class. Under $35,084 puts you in the cheapest quarter of active US listings and under $28,049 in the cheapest 5%; above $88,973 is the priciest 5% (as of 2026-10-19).

What is the cheapest used 2020 Mercedes-Benz S-Class for sale right now?

$21,900 — a 2020 Mercedes-Benz S-Class S 450-4M in Joplin, MO, $18,339 under the median (as of 2026-10-19).

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?

The listing data behind UnderMarket Cars is rebuilt from live US dealer inventory every few hours, and this used 2020 Mercedes-Benz S-Class page is regenerated from it when it is requested. The figures on this page are from 2026-10-19.

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Prices updated 2026-10-19. Data covers active dealer listings across the USA.