The average asking price for a used 2020 Mercedes-Benz GLB is $21,233, with 60,995 miles on average, across 100 cars for sale at U.S. dealers as of Nov 10, 2026.
| State | Average asking | Average miles | For sale | Days listed |
|---|---|---|---|---|
| California | $21,523 | 53,218 | 19 | 80 |
| Texas | $20,746 | 62,156 | 7 | 66 |
| Florida | $19,367 | 74,063 | 6 | 56 |
| Virginia | $17,168 | 84,783 | 5 | 48 |
Used 2020 Mercedes-Benz GLBs for sale at U.S. dealers ask $21,233 on average (half ask less than $21,561), across 100 cars. The cars for sale have 60,995 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 76 for sale with a listing date have been listed 71 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 2020 asks $21,233 on average with 60,995 miles; the 2021 asks $23,710 with 57,293 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.
