Mercedes-Benz · Small SUVs · Gasoline
Mercedes-Benz GLB-Class: MPG and annual fuel cost, 2023
The Mercedes-Benz GLB-Class was last rated in the data for model year 2023, at 27 MPG combined, 3rd of 11 small SUVs, in the top quarter, ahead of 80% of the others.
- 27MPG combined3rd of 11 in class
- $3,050a year in fuel7th of 11 in class
- 330g/mile CO2
Where it stands
Compared only with the gasoline models of its class it is the most efficient of the 7 gasoline small SUVs rated that year. The median of that narrower group is 24 MPG, against 25 MPG for all small SUVs together.
Among all gasoline models of the year, regardless of size, it is 4th of 35 gasoline models, in the top quarter, ahead of 91% of the others.
In its class, just ahead of it is the Hyundai Santa Fe Plug-in hybrid at 33 MPG and just behind it is the Fiat 500 at 26 MPG.
Fuel cost and CO2
Assuming 15,000 miles a year with 55% of them in the city and premium gasoline at $5.48 per gallon, fuelling the most efficient version comes to about $3,050 a year. That is $150 more than the small SUVs median of $2,900, which makes it 7th of 11 small SUVs, in the lower half.
It emits 330 g of CO2 per mile from the tailpipe; the small SUVs median is 370, a difference of 40 g/mile.
Rated versions
Its city rating is 24 and its highway rating 32: the highway figure is 8 higher. 3 versions are rated for 2023. The most efficient, GLB250: 2.0 L, 4 cyl, Automatic (AM8), FWD, gets 27 MPG; the least efficient listed, AMG GLB35 4matic: 2.0 L, 4 cyl, Automatic (AM8), AWD, gets 23 MPG, a gap of 4 MPG. With the file's assumptions that gap is worth about $500 a year in fuel.
| Version | Combined MPG | City MPG | Highway MPG | Annual fuel cost | CO2 g/mile |
|---|---|---|---|---|---|
| GLB250: 2.0 L, 4 cyl, Automatic (AM8), FWD | 27 | 24 | 32 | $3,050 | 330 |
| GLB250 4matic: 2.0 L, 4 cyl, Automatic (AM8), AWD | 25 | 22 | 30 | $3,300 | 355 |
| AMG GLB35 4matic: 2.0 L, 4 cyl, Automatic (AM8), AWD | 23 | 21 | 27 | $3,550 | 382 |
Year by year
The Mercedes-Benz GLB-Class is in the data for 4 of the 8 model years from 2019 to 2026. Between 2020 and 2023 the best combined rating rose by 1 MPG, from 26 to 27. The number of rated versions grew from 2 to 3. Fuel cost for the best version is $3,050 in the latest data against $3,150 in 2020, although the file applies today's fuel prices to every model year, so that change comes from the rating, not from prices.
| Model year | Versions | Best MPG | Lowest MPG | Fuel cost | CO2 g/mi | Class median |
|---|---|---|---|---|---|---|
| 2023 | 3 | 27 | 23 | $3,050 | 330 | 27 |
| 2022 | 3 | 27 | 22 | $3,050 | 330 | 26 |
| 2021 | 3 | 26 | 23 | $3,150 | 347 | 26 |
| 2020 | 2 | 26 | 26 | $3,150 | 338 | 26 |
Similar models
| Model | Powertrain | Combined MPG | Annual fuel cost | Model year |
|---|---|---|---|---|
| Jeep Wrangler Diesel | Diesel | 25 | $3,850 | 2023 |
| Jeep Cherokee | Gasoline | 24 | $2,800 | 2023 |
| Mazda CX-9 | Gasoline | 23 | $2,900 | 2023 |
| Mercedes-Benz GLC-Class | Gasoline | 22 | $3,750 | 2023 |
| Jeep Wrangler Hybrid | Hybrid | 21 | $3,200 | 2023 |
Compare and rank
Rankings: Small SUVs.
Data: US EPA and DOE, as prepared in methods and data.