Market price · Used 2018 Mercedes-Benz C-Class 838 listings tracked

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

A used 2018 Mercedes-Benz C-Class in the US typically lists for $14,606–$22,797, with a median asking price of $17,901 across 838 active US dealer listings (as of 2026-10-19). The cheapest one listed right now is $7,500, a 2018 C300 in Houston, TX — below 95% of the market, so expect high mileage, a base trim or a branded title — check the vehicle history.

Used 2018 Mercedes-Benz C-Class · asking prices838 listings

median $17.9k ◀ cheapest $7,500

$10k$40k

Typical range: $14,606 – $22,797
Median: $17,901
Cheapest 5%: under $11,719
Cheapest listed now: $7,500

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typical price per year

More years (18)

Cheapest 10 listed right now

ranked by price

$7,500

2018 Mercedes-Benz C-Class C300

161,480 mi · Houston, TX · Westlake Auto Credit
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$8,125

2018 Mercedes-Benz C-Class C300

98,685 mi · Tampa, FL · Capital Auto Mall Premier
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$8,900

2018 Mercedes-Benz C-Class C350E

139,725 mi · Mt Juliet, TN · MotorCars of Nashville
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$8,902

2018 Mercedes-Benz C-Class AMG C43

44,098 mi · Massapequa Park, NY · Power Motors East
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$8,921

2018 Mercedes-Benz C-Class AMG C 63

51,116 mi · Massapequa Park, NY · Power Motors East
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$8,929

2018 Mercedes-Benz C-Class C300

201,118 mi · Stone Mountain, GA · Pars Auto Sales
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$8,990

2018 Mercedes-Benz C-Class C300

158,580 mi · Orlando, FL · Way Auto Sales
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$8,995

2018 Mercedes-Benz C-Class C300

140,888 mi · Tampa, FL · Selective Autos
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$8,999

2018 Mercedes-Benz C-Class C300D-4M

144,013 mi · Mechanicsville, VA · All Ryde Autos of Mechanicsville
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$9,490

2018 Mercedes-Benz C-Class C300-4M

103,548 mi · Miami, FL · Lions Pre-Owned Miami
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 2018 Mercedes-Benz C-Class asks $14,606–$22,797. 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 C-Class cost?

A used 2018 Mercedes-Benz C-Class in the US typically lists for $14,606 to $22,797, with a median asking price of $17,901 across 838 active US dealer listings. Nine in ten are priced between $11,719 and $39,756 (as of 2026-10-19, source: UnderMarket Cars).

Is $18,000 a good price for a used 2018 Mercedes-Benz C-Class?

That sits at about the market median ($17,901) for a used 2018 Mercedes-Benz C-Class. Under $14,606 puts you in the cheapest quarter of active US listings and under $11,719 in the cheapest 5%; above $39,756 is the priciest 5% (as of 2026-10-19).

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

$7,500 — a 2018 Mercedes-Benz C-Class C300 in Houston, TX, $10,401 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 2018 Mercedes-Benz C-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.