Live US dealer listings Median-priced benchmark Updated 2026-09-01
Market price · Used 2018 BMW X3 343 listings tracked

Used 2018 BMW X3 Price in the US

A used 2018 BMW X3 in the US typically lists for $15,404–$20,787, with a median asking price of $17,597 across 343 active US dealer listings (as of 2026-09-01). The cheapest one listed right now is $9,069, a 2018 Sdrive30i in Davis, CA — below 95% of the market, so expect an older model year, a base trim or high mileage.

Used 2018 BMW X3 · asking prices343 listings
$12k$28k
Typical range
$15,404 – $20,787
Median
$17,597
Cheapest 5%
under $12,428
Cheapest listed now
$9,069

Browse by model year

cheapest per year

Cheapest 10 listed right now

ranked by price
  1. 2018 BMW X3
    $9,069
    2018 BMW X3 Sdrive30i
    118,897 mi · Davis, CA · Sac River Auto
    View listing →
  2. $9,098
    2018 BMW X3 Sdrive30i
    160,687 mi · Dover, NJ · Nemri Auto Sales
    View listing →
  3. 2018 BMW X3
    $9,798
    2018 BMW X3 Sdrive30i
    157,628 mi · Milan, TN · TriStar Auto, LLC
    View listing →
  4. 2018 BMW X3
    $9,890
    2018 BMW X3 Sdrive30i
    127,139 mi · Longwood, FL · Speed Motor Sales
    View listing →
  5. 2018 BMW X3
    $10,295
    2018 BMW X3 Sdrive30i
    127,041 mi · Paterson, NJ · Xcell Motors LLC
    View listing →
  6. $10,900
    2018 BMW X3 Sdrive30i
    136,522 mi · Burlington, NJ · GTA Motors
    View listing →
  7. 2018 BMW X3
    $10,900
    2018 BMW X3 Sdrive30i
    138,354 mi · Loganville, GA · Lux Motors Loganville
    View listing →
  8. $11,187
    2018 BMW X3 Sdrive30i
    120,678 mi · Taylors, SC · Happy Trails Auto Sales LLC
    View listing →
  9. $11,495
    2018 BMW X3 Sdrive30i
    138,826 mi · Milford, MA · Premier Automart
    View listing →
  10. 2018 BMW X3
    $11,500
    2018 BMW X3 Sdrive30i
    98,906 mi · Westminster, CO · Elite Motors
    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 BMW X3 asks $15,404–$20,787. Cars this far under usually carry an older model year, a base trim or high mileage.

FAQ

How much does a used 2018 BMW X3 cost?

A used 2018 BMW X3 in the US typically lists for $15,404 to $20,787, with a median asking price of $17,597 across 343 active US dealer listings. Nine in ten are priced between $12,428 and $26,996 (as of 2026-09-01, source: UnderMarket Cars).

Is $18,000 a good price for a used 2018 BMW X3?

That sits at about the market median ($17,597) for a used 2018 BMW X3. Under $15,404 puts you in the cheapest quarter of active US listings and under $12,428 in the cheapest 5%; above $26,996 is the priciest 5% (as of 2026-09-01).

What is the cheapest used 2018 BMW X3 for sale right now?

$9,069 — a 2018 BMW X3 Sdrive30i in Davis, CA, $8,528 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 BMW X3 price page at least twice a day. The data date shown on this page is 2026-09-01.

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Prices updated 2026-09-01. Data covers active dealer listings across the USA.