Live US dealer listings Median-priced benchmark Updated 2026-10-13
Market price · Used 2020 Mercedes-Benz SL-Class 12 listings tracked

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

A used 2020 Mercedes-Benz SL-Class in the US typically lists for $53,684–$66,900, with a median asking price of $63,598 across 12 active US dealer listings (as of 2026-10-13). The cheapest one listed right now is $41,435, a 2020 Sl450 in Kenner, LA — below 95% of the market, so expect high mileage, a base trim or a branded title — check the vehicle history.

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More years (17)

Cheapest 10 listed right now

ranked by price
  1. 2020 Mercedes-Benz SL-Class
    $41,435
    2020 Mercedes-Benz SL-Class Sl450
    63,080 mi · Kenner, LA · Best Chevrolet, Inc.
    View listing →
  2. 2020 Mercedes-Benz SL-Class
    $47,995
    2020 Mercedes-Benz SL-Class Sl550
    21,601 mi · Houston, TX · Autodynamics
    View listing →
  3. $51,834
    2020 Mercedes-Benz SL-Class Sl550
    68,708 mi · Pelham, AL · Exclusive Auto Wholesale
    View listing →
  4. $54,300
    2020 Mercedes-Benz SL-Class Sl550
    58,195 mi · Ocoee, FL · Cire Leasing
    View listing →
  5. 2020 Mercedes-Benz SL-Class
    $57,825
    2020 Mercedes-Benz SL-Class Sl450
    12,281 mi · Riverside, CA · Dutton Buick GMC
    View listing →
  6. 2020 Mercedes-Benz SL-Class
    $62,199
    2020 Mercedes-Benz SL-Class Sl550
    30,479 mi · Greensboro, NC · Sebar Inc.
    View listing →
  7. 2020 Mercedes-Benz SL-Class
    $64,998
    2020 Mercedes-Benz SL-Class Sl450
    2,224 mi · Akron, OH · Ken Ganley Toyota Akron
    View listing →
  8. $65,647
    2020 Mercedes-Benz SL-Class Sl450
    13,102 mi · Bourne, MA · Atlantic Subaru
    View listing →
  9. $65,900
    2020 Mercedes-Benz SL-Class Sl550
    37,623 mi · Murfreesboro, TN · autocollection363
    View listing →
  10. 2020 Mercedes-Benz SL-Class
    $69,900
    2020 Mercedes-Benz SL-Class Sl550
    36,073 mi · Abilene, TX · Mercedes-Benz of Abilene
    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 SL-Class asks $53,684–$66,900. 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 SL-Class cost?

A used 2020 Mercedes-Benz SL-Class in the US typically lists for $53,684 to $66,900, with a median asking price of $63,598 across 12 active US dealer listings. Nine in ten are priced between $45,043 and $73,158 (as of 2026-10-13, source: UnderMarket Cars).

Is $64,000 a good price for a used 2020 Mercedes-Benz SL-Class?

That sits at about the market median ($63,598) for a used 2020 Mercedes-Benz SL-Class. Under $53,684 puts you in the cheapest quarter of active US listings and under $45,043 in the cheapest 5%; above $73,158 is the priciest 5% (as of 2026-10-13).

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

$41,435 — a 2020 Mercedes-Benz SL-Class Sl450 in Kenner, LA, $22,163 under the median (as of 2026-10-13).

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 SL-Class page is regenerated from it when it is requested. The figures on this page are from 2026-10-13.

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Prices updated 2026-10-13. Data covers active dealer listings across the USA.