Used 2018 Cadillac XTS Price in the US
A used 2018 Cadillac XTS in the US typically lists for $13,263–$19,796, with a median asking price of $16,597 across 94 active US dealer listings (as of 2026-09-01). The cheapest one listed right now is $6,450, a 2018 Luxury in Deerfield Beach, FL — below 95% of the market, so expect an older model year, a base trim or high mileage.
- Typical range
- $13,263 – $19,796
- Median
- $16,597
- Cheapest 5%
- under $9,497
- Cheapest listed now
- $6,450
Browse by model year
cheapest per yearCheapest 10 listed right now
ranked by price-
$6,4502018 Cadillac XTS Luxury161,844 mi · Deerfield Beach, FL · EZ Automobile BrokersView listing → -
$8,9902018 Cadillac XTS Luxury110,200 mi · Anderson, IN · Unlimited Auto Sales GroupView listing →
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$8,9952018 Cadillac XTS Luxury180,000 mi · Farmington Hills, MI · RJ Auto of Farmington HillsView listing → -
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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 Cadillac XTS asks $13,263–$19,796. Cars this far under usually carry an older model year, a base trim or high mileage.
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10 pinnedFAQ
How much does a used 2018 Cadillac XTS cost?
A used 2018 Cadillac XTS in the US typically lists for $13,263 to $19,796, with a median asking price of $16,597 across 94 active US dealer listings. Nine in ten are priced between $9,497 and $23,992 (as of 2026-09-01, source: UnderMarket Cars).
Is $17,000 a good price for a used 2018 Cadillac XTS?
That sits at about the market median ($16,597) for a used 2018 Cadillac XTS. Under $13,263 puts you in the cheapest quarter of active US listings and under $9,497 in the cheapest 5%; above $23,992 is the priciest 5% (as of 2026-09-01).
What is the cheapest used 2018 Cadillac XTS for sale right now?
$6,450 — a 2018 Cadillac XTS Luxury in Deerfield Beach, FL, $10,147 under the median (as of 2026-09-01).
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 Cadillac XTS price page at least twice a day. The data date shown on this page is 2026-09-01.
Explore more
Prices updated 2026-09-01. Data covers active dealer listings across the USA.