Mercedes-Benz · Small SUVs · Hybrid
Mercedes-Benz GLB-Class Hybrid: MPG and annual fuel cost, 2026
At 28 MPG combined, the Mercedes-Benz GLB-Class Hybrid sits 1 MPG below the small SUVs median of 29, which makes it tied for 62nd of 113 small SUVs, in the lower half.
- 28MPG combinedtied 62nd of 113 in class
- $2,950a year in fueltied 87th of 113 in class
- 311g/mile CO2
Where it stands
Compared only with the hybrid models of its class it is tied for 18th of 23 hybrid small SUVs, in the bottom quarter. The median of that narrower group is 36 MPG, against 29 MPG for all small SUVs together.
Among all hybrid models of the year, regardless of size, it is tied for 42nd of 88 hybrid models, in the upper half.
Within the 22 Mercedes-Benz models rated for 2026 it is tied for 8th on combined rating; the median of the make's line-up is 25.5 MPG.
In its class, just ahead of it is the BMW X3 Hybrid at 29 MPG and just behind it is the Chevrolet Equinox at 27 MPG.
Fuel cost and CO2
At 15,000 miles a year with 55% of them in the city, with premium gasoline at $5.48 per gallon, the annual fuel bill of the most efficient version is about $2,950. That is $650 more than the small SUVs median of $2,300, which makes it tied for 87th of 113 small SUVs, in the bottom quarter.
Tailpipe CO2 is 311 g/mile, 13 g/mile above the small SUVs median of 298.
Rated versions
Its city rating is 25 and its highway rating 33: the highway figure is 8 higher. 3 versions are rated for 2026. The most efficient, GLB250: 2.0 L, 4 cyl hybrid, Automatic (AM8), FWD, gets 28 MPG; the least efficient listed, AMG GLB35 4matic: 2.0 L, 4 cyl hybrid, Automatic (AM8), AWD, gets 23 MPG, a gap of 5 MPG. With the file's assumptions that gap is worth about $600 a year in fuel.
| Version | Combined MPG | City MPG | Highway MPG | Annual fuel cost | CO2 g/mile |
|---|---|---|---|---|---|
| GLB250: 2.0 L, 4 cyl hybrid, Automatic (AM8), FWD | 28 | 25 | 33 | $2,950 | 311 |
| GLB250 4matic: 2.0 L, 4 cyl hybrid, Automatic (AM8), AWD | 27 | 24 | 33 | $3,050 | 324 |
| AMG GLB35 4matic: 2.0 L, 4 cyl hybrid, Automatic (AM8), AWD | 23 | 21 | 27 | $3,550 | 387 |
Year by year
The Mercedes-Benz GLB-Class Hybrid is in the data for 3 of the 8 model years from 2019 to 2026. The headline rating did not move between 2024 and 2026: 28 MPG both times.
| Model year | Versions | Best MPG | Lowest MPG | Fuel cost | CO2 g/mi | Class median |
|---|---|---|---|---|---|---|
| 2026 | 3 | 28 | 23 | $2,950 | 311 | 29 |
| 2025 | 3 | 28 | 23 | $2,950 | 311 | 29 |
| 2024 | 3 | 28 | 23 | $2,950 | 319 | 28 |
Similar models
| Model | Powertrain | Combined MPG | Annual fuel cost | Model year |
|---|---|---|---|---|
| Mitsubishi Outlander Hybrid | Hybrid | 28 | $2,400 | 2026 |
| BMW X2 | Gasoline | 28 | $2,950 | 2026 |
| Kia Sportage | Gasoline | 28 | $2,400 | 2026 |
| Volvo XC60 Plug-in hybrid | Plug-in hybrid | 28 | $2,950 | 2026 |
| BMW X3 Hybrid | Hybrid | 29 | $2,850 | 2026 |
Compare and rank
Rankings: Small SUVs, Hybrid, Mercedes-Benz, Hybrid small SUVs.
Data: US EPA and DOE, as prepared in methods and data.