Market price · Used 2018 Mercedes-Benz S-Class 214 listings tracked

Used 2018 Mercedes-Benz S-Class Price in the US

A used 2018 Mercedes-Benz S-Class in the US typically lists for $25,953–$41,550, with a median asking price of $31,979 across 214 active US dealer listings (as of 2026-10-16). The cheapest one listed right now is $13,290, a 2018 S450 in Miami, FL — below 95% of the market, so expect high mileage, a base trim or a branded title — check the vehicle history.

Used 2018 Mercedes-Benz S-Class · asking prices214 listings

median $32k ◀ cheapest $13.3k

$15k$75k

Typical range: $25,953 – $41,550
Median: $31,979
Cheapest 5%: under $19,998
Cheapest listed now: $13,290

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More years (19)

Cheapest 10 listed right now

ranked by price

$13,290

2018 Mercedes-Benz S-Class S450

140,712 mi · Miami, FL · Lions Pre-Owned Miami
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$15,999

2018 Mercedes-Benz S-Class S450 4MATIC

155,055 mi · Irvington, NJ · General Auto Group
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$17,499

2018 Mercedes-Benz S-Class S450 4MATIC

128,400 mi · Bensenville, IL · Royce Auto
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$17,899

2018 Mercedes-Benz S-Class S450 4MATIC

104,058 mi · Pasadena, TX · Strawberry Road Auto Sales
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$17,900

2018 Mercedes-Benz S-Class S450

150,640 mi · Dallas, TX · Berton Auto Group
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$18,499

2018 Mercedes-Benz S-Class S450 4MATIC

122,379 mi · Boynton Beach, FL · The Platinum Collection LLC
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$18,985

2018 Mercedes-Benz S-Class S450

118,579 mi · Woodland Hills, CA · Kivano Inc.
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$19,444

2018 Mercedes-Benz S-Class S560

116,488 mi · Fairfax, VA · Auto Buying Service · +1 more like it here
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$19,900

2018 Mercedes-Benz S-Class S450

135,000 mi · Irvine, CA
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$19,990

2018 Mercedes-Benz S-Class S450

92,773 mi · Van Nuys, CA · Vici Auto Group
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These are the bottom of the market, not the going rate — every one is priced below 95% of active listings. A typical used 2018 Mercedes-Benz S-Class asks $25,953–$41,550. Cars this far under: expect high mileage, a base trim or a branded title — check the vehicle history.

FAQ

How much does a used 2018 Mercedes-Benz S-Class cost?

A used 2018 Mercedes-Benz S-Class in the US typically lists for $25,953 to $41,550, with a median asking price of $31,979 across 214 active US dealer listings. Nine in ten are priced between $19,998 and $70,136 (as of 2026-10-16, source: UnderMarket Cars).

Is $32,000 a good price for a used 2018 Mercedes-Benz S-Class?

That sits at about the market median ($31,979) for a used 2018 Mercedes-Benz S-Class. Under $25,953 puts you in the cheapest quarter of active US listings and under $19,998 in the cheapest 5%; above $70,136 is the priciest 5% (as of 2026-10-16).

What is the cheapest used 2018 Mercedes-Benz S-Class for sale right now?

$13,290 — a 2018 Mercedes-Benz S-Class S450 in Miami, FL, $18,689 under the median (as of 2026-10-16).

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 2018 Mercedes-Benz S-Class page is regenerated from it when it is requested. The figures on this page are from 2026-10-16.

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Prices updated 2026-10-16. Data covers active dealer listings across the USA.