Used 2018 BMW 640i Price in the US
A used 2018 BMW 640i in the US typically lists for $19,380–$27,824, with a median asking price of $21,096 across 14 active US dealer listings (as of 2026-08-30). The cheapest one listed right now is $12,989, a 2018 Xdrive Gran in Clinton, NC — below 95% of the market, so expect an older model year, a base trim or high mileage.
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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 BMW 640i asks $19,380–$27,824. 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 BMW 640i cost?
A used 2018 BMW 640i in the US typically lists for $19,380 to $27,824, with a median asking price of $21,096 across 14 active US dealer listings. Nine in ten are priced between $14,264 and $31,512 (as of 2026-08-30, source: UnderMarket Cars).
Is $21,000 a good price for a used 2018 BMW 640i?
That sits at about the market median ($21,096) for a used 2018 BMW 640i. Under $19,380 puts you in the cheapest quarter of active US listings and under $14,264 in the cheapest 5%; above $31,512 is the priciest 5% (as of 2026-08-30).
What is the cheapest used 2018 BMW 640i for sale right now?
$12,989 — a 2018 BMW 640i Xdrive Gran in Clinton, NC, $8,107 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 BMW 640i price page at least twice a day. The data date shown on this page is 2026-08-30.
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Prices updated 2026-08-30. Data covers active dealer listings across the USA.