Live US dealer listings Median-priced benchmark Updated 2026-10-18
Market price · Used 2018 GMC Yukon XL 1,363 listings tracked

Used 2018 GMC Yukon XL Price in the US

A used 2018 GMC Yukon XL in the US typically lists for $19,999–$26,996, with a median asking price of $23,867 across 1,363 active US dealer listings (as of 2026-10-18). The cheapest one listed right now is $9,820, a 2018 SLT in Carrollton, GA — below 95% of the market, so expect high mileage, a base trim or a branded title — check the vehicle history.

Used 2018 GMC Yukon XL · asking prices1,363 listings
$14k$34k
Typical range
$19,999 – $26,996
Median
$23,867
Cheapest 5%
under $15,500
Cheapest listed now
$9,820

Browse by model year

typical price per year
More years (19)

Cheapest 10 listed right now

ranked by price
  1. $9,820
    2018 GMC Yukon XL SLT
    213,923 mi · Carrollton, GA · Carrollton Hyundai
    View listing →
  2. $10,000
    2018 GMC Yukon XL SLT
    222,699 mi · Columbia, MO · Quality Pre-Owned Automotive
    View listing →
  3. 2018 GMC Yukon XL
    $10,970
    2018 GMC Yukon XL SLT
    192,390 mi · Orlando, FL · Ironway Cars Corp
    View listing →
  4. 2018 GMC Yukon XL
    $11,495
    2018 GMC Yukon XL SLE
    196,592 mi · Tampa, FL · Luma Motors
    View listing →
  5. $11,500
    2018 GMC Yukon XL SLE
    190,714 mi · Morrisville, VT · Wagon World
    View listing →
  6. $11,997
    2018 GMC Yukon XL SLT
    218,900 mi · Greensboro, NC · Speed Auto Mall
    View listing →
  7. 2018 GMC Yukon XL
    $12,223
    2018 GMC Yukon XL SLT
    184,895 mi · Kennesaw, GA · ALM Kennesaw
    View listing →
  8. $12,377
    2018 GMC Yukon XL SLT
    199,451 mi · New Lenox, IL · CCR Auto Sales
    View listing →
  9. $12,399
    2018 GMC Yukon XL SLT
    152,620 mi · Harrisonburg, VA · Steven Kia
    View listing →
  10. $12,426
    2018 GMC Yukon XL SLT
    253,415 mi · Hattiesburg, MS · Dean McCrary Kia
    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 GMC Yukon XL asks $19,999–$26,996. 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 GMC Yukon XL cost?

A used 2018 GMC Yukon XL in the US typically lists for $19,999 to $26,996, with a median asking price of $23,867 across 1,363 active US dealer listings. Nine in ten are priced between $15,500 and $32,998 (as of 2026-10-18, source: UnderMarket Cars).

Is $24,000 a good price for a used 2018 GMC Yukon XL?

That sits at about the market median ($23,867) for a used 2018 GMC Yukon XL. Under $19,999 puts you in the cheapest quarter of active US listings and under $15,500 in the cheapest 5%; above $32,998 is the priciest 5% (as of 2026-10-18).

What is the cheapest used 2018 GMC Yukon XL for sale right now?

$9,820 — a 2018 GMC Yukon XL SLT in Carrollton, GA, $14,047 under the median (as of 2026-10-18).

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 GMC Yukon XL page is regenerated from it when it is requested. The figures on this page are from 2026-10-18.

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Prices updated 2026-10-18. Data covers active dealer listings across the USA.