Used 2018 Mercedes-Benz SL-Class Price in the US
A used 2018 Mercedes-Benz SL-Class in the US typically lists for $35,495–$52,906, with a median asking price of $44,908 across 35 active US dealer listings (as of 2026-08-30). The cheapest one listed right now is $27,995, a 2018 Sl550 in Streamwood, IL — below 95% of the market, so expect an older model year, a base trim or high mileage.
Browse by model year
cheapest per year- All years
- 2027 · from $236,200
- 2026 · from $120,290
- 2025 · from $85,996
- 2024 · from $78,362
- 2023 · from $56,962
- 2022 · from $69,999
- 2020 · from $41,950
- 2019 · from $39,249
- 2018 · from $27,995
- 2017 · from $27,598
- 2016 · from $19,741
- 2015 · from $16,799
- 2014 · from $14,950
- 2013 · from $16,899
- 2012 · from $17,700
- 2011 · from $10,999
- 2009 · from $8,000
- 2008 · from $8,378
- 2007 · from $6,997
- 2006 · from $7,499
- 2005 · from $7,255
- 2004 · from $3,999
- 2003 · from $4,056
- 2002 · from $5,999
- 2001 · from $10,995
- 2000 · from $4,888
Cheapest 10 listed right now
ranked by price-
$27,9952018 Mercedes-Benz SL-Class Sl550110,394 mi · Streamwood, IL · Conway ImportsView listing → -
$31,2782018 Mercedes-Benz SL-Class Sl45067,015 mi · Orland Park, IL · Bettenhausen FIAT & Used Car Mega StoreView listing → -
$32,5982018 Mercedes-Benz SL-Class Sl550103,122 mi · Rancho Cordova, CA · High Class Auto SalesView listing → -
$33,2862018 Mercedes-Benz SL-Class Sl45070,948 mi · Lutz, FL · AutoNation USA Wesley ChapelView listing → -
$33,7502018 Mercedes-Benz SL-Class Sl55085,491 mi · Hightstown, NJ · Excel Auto LoungeView listing → -
$34,5002018 Mercedes-Benz SL-Class Sl45061,931 mi · Indianapolis, IN · AutoGiant USAView listing → -
$34,5902018 Mercedes-Benz SL-Class Sl45066,796 mi · Atlanta, GA · Carvana - AtlantaView listing → -
$34,8852018 Mercedes-Benz SL-Class Sl55074,664 mi · Daly City, CA · All Stars MotorsView listing →
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$34,9952018 Mercedes-Benz SL-Class Sl45072,690 mi · Fuquay-Varina, NC · Karma of FuquayView listing → -
$35,9952018 Mercedes-Benz SL-Class Sl45058,246 mi · Indianapolis, IN · AutoGiant USAView 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 Mercedes-Benz SL-Class asks $35,495–$52,906. 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 Mercedes-Benz SL-Class cost?
A used 2018 Mercedes-Benz SL-Class in the US typically lists for $35,495 to $52,906, with a median asking price of $44,908 across 35 active US dealer listings. Nine in ten are priced between $32,202 and $76,924 (as of 2026-08-30, source: UnderMarket Cars).
Is $45,000 a good price for a used 2018 Mercedes-Benz SL-Class?
That sits at about the market median ($44,908) for a used 2018 Mercedes-Benz SL-Class. Under $35,495 puts you in the cheapest quarter of active US listings and under $32,202 in the cheapest 5%; above $76,924 is the priciest 5% (as of 2026-08-30).
What is the cheapest used 2018 Mercedes-Benz SL-Class for sale right now?
$27,995 — a 2018 Mercedes-Benz SL-Class Sl550 in Streamwood, IL, $16,913 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 Mercedes-Benz SL-Class 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.