2020 Mercedes-Benz GLB – gasoline lineup
| GLB 200 | GLB 250 4MATIC | |
| Transmission | 7G-DCT (automatic) | 8G-DCT (automatic) |
| Displacement (cc) | 1332 | 1991 |
| Output (kW/hp) | 120/163 | 165/224 |
| at rpm | 5500 | 5800 |
| Max. torque (Nm) | 250 | 350 |
| at rpm | 1620 – 4000 | 1800 – 4000 |
| Combined fuel consumption | 6.2-6.0 | 7.4-7.2 |
| (l/100 km)[3] | ||
| Combined CO2 emissions (g/km)1 | 142-137 | 169-165 |
| Acceleration 0-100 km/h (s) | 9.1 | 6.9 |
| Top speed (km/h) | 207 | 236 |
2020 Mercedes-Benz GLB – diesel lineup
| GLB 200 d | GLB 200 d 4MATIC | GLB 220 d 4MATIC | |
| Transmission | 8G-DCT (automatic) | 8G-DCT (automatic) | 8G-DCT (automatic) |
| Displacement (cc) | 1951 | 1951 | 1951 |
| Output (kW/hp) | 110/150 | 110/150 | 140/190 |
| at rpm | 3400 – 4440 | 3400 – 4440 | 3800 |
| Max. torque (Nm) | 320 | 320 | 400 |
| at rpm | 1400 – 2600 | 1400 – 2600 | 1600 – 2400 |
| Combined fuel consumption | 5.0-4.9 | 5.5-5.2 | 5.5-5.2 |
| (l/100 km)1 | |||
| Combined CO2 emissions (g/km)1 | 133-129 | 144-136 | 146-138 |
| Acceleration 0-100 km/h (s) | 9 | 9.3 | 7.6 |
| Top speed (km/h) | 204 | 201 | 217 |