The average asking price for a used 2018 BMW 330i xDrive is $18,673, with 69,767 miles on average, across 17 cars for sale at U.S. dealers as of Nov 10, 2026.
Used 2018 BMW 330i xDrives for sale at U.S. dealers ask $18,673 on average (half ask less than $17,174), across 17 cars. The cars for sale have 69,767 miles on average: one with fewer miles is worth more, and one with more is worth less. To check one car's price against cars of its trim and mileage, enter its VIN in OttoQuest's free Deal Check.
The 14 for sale with a listing date have been listed 62 days on average. A car listed much longer than that, or one whose price has already been cut, usually leaves more room to negotiate.
The 2018 asks $18,673 on average with 69,767 miles; the 2017 asks $14,342 with 86,983 miles, and the 2019 asks $22,111 with 68,747 miles.
Used and certified cars for sale at US dealers, each car counted once. Days listed are the dealer’s own days on market where they publish it. Price moves compare the same cars at both ends of the window.
