Mercedes-Benz GLB250
28 MPG The 2026 Mercedes-Benz GLB250 is EPA-rated at 28 MPG combined (25 city / 33 highway). Over 15,000 miles a year that is about 536 gallons, $1714 a year in fuel, or $0.114 per mile at $3.20/gal.
Across its full 2020–2026 run it averages 27.1 MPG, improving by 2 MPG over 7 model years.
Running cost at different fuel prices and mileages
The figure everyone actually wants, and the one the EPA does not publish — because it depends on a fuel price no agency will commit to.
| Fuel price | Per mile | 10,000 mi/yr | 15,000 mi/yr | 20,000 mi/yr |
|---|---|---|---|---|
| $2.50/gal | $0.089 | $893 | $1339 | $1786 |
| $3.00/gal | $0.107 | $1071 | $1607 | $2143 |
| $3.20/gal | $0.114 | $1143 | $1714 | $2286 |
| $3.50/gal | $0.125 | $1250 | $1875 | $2500 |
| $4.00/gal | $0.143 | $1429 | $2143 | $2857 |
| $4.50/gal | $0.161 | $1607 | $2411 | $3214 |
| $5.00/gal | $0.179 | $1786 | $2679 | $3571 |
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 2026 | 28 MPG | 25 | 33 | $2750 | 311 | 1 |
| 2025 | 28 MPG | 25 | 33 | $2750 | 311 | 1 |
| 2024 | 28 MPG | 25 | 33 | $2750 | 319 | 1 |
| 2023 | 27 MPG | 24 | 32 | $2850 | 330 | 1 |
| 2022 | 27 MPG | 24 | 32 | $2850 | 330 | 1 |
| 2021 | 26 MPG | 23 | 31 | $2950 | 337 | 1 |
| 2020 | 26 MPG | 23 | 30 | $2950 | 344 | 1 |
Where a model year offered several engines or drivetrains, the figure is the average across all EPA-tested trims that year — the trim count is shown so you can see how much averaging is involved.
How it compares in its class
Among the 29 special purpose vehicle 2wd models tracked here, the Mercedes-Benz GLB250 ranks 1 on current figures, against a class average of 18.4 MPG.
Nothing in its class is rated higher — it leads the group.
Tailpipe CO₂ is rated at 311 grams per mile, which works out to roughly 4.7 tonnes a year at 15,000 miles.
Questions
What MPG does the Mercedes-Benz GLB250 get?
The 2026 Mercedes-Benz GLB250 is rated at 28 MPG combined by the EPA — 25 city and 33 highway. Across all 7 model years in the database it averages 27.1 MPG, ranging from 26 to 28 depending on year and trim.
How much does a Mercedes-Benz GLB250 cost in fuel per year?
At 28 MPG and 15,000 miles a year, it burns about 536 gallons — roughly $1714 a year with fuel at $3.20 a gallon, or $0.114 per mile. The EPA's own published annual figure for the 2026 model is $2750.
Has the Mercedes-Benz GLB250 become more efficient over time?
Yes. It has gone from 26 MPG in 2020 to 28 in 2026 — an improvement of 2 MPG, or 8% across 7 model years.
Is the Mercedes-Benz GLB250 efficient for its class?
It ranks 1 of 29 in the Special Purpose Vehicle 2WD class on current figures, against a class average of 18.4 MPG. That is 9.6 better than typical for the class.
EPA test figures from fueleconomy.gov. Cost per mile and annual fuel spend are computed at a reference price of $3.20 per gallon — use your own price. Estimates based on official test figures and average fuel prices. Real-world consumption varies with driving style, load, terrain and maintenance.