2025 head-to-head · Small SUV
2025 BMW X3 Hybrid vs Mercedes-Benz GLB-Class Hybrid
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
The 2025 BMW X3 Hybrid is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,043 a year to fuel (29 MPG), versus $2,116 for the 2025 Mercedes-Benz GLB-Class Hybrid (28 MPG). That's roughly $73 a year, or about $365 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- BMW X3 Hybrid
- Mercedes-Benz GLB-Class Hybrid
Side by side
| BMW X3 Hybrid | Mercedes-Benz GLB-Class Hybrid | |
|---|---|---|
| $2,043 | Your annual fuel cost | $2,116 |
| 29 MPG | Combined efficiency | 28 MPG |
| 27 MPG | City | 25 MPG |
| 33 MPG | Highway | 33 MPG |
| 299 g/mi | Tailpipe CO₂ (g/mi) | 311 g/mi |
| 6/10 | EPA fuel economy score | 6/10 |
| 6/10 | EPA greenhouse gas score | 6/10 |
| Hybrid | Powertrain | Hybrid |
| Premium gasoline | Fuel | Premium gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 2.0L 4-cyl turbo |
| 8-speed automatic | Transmission | 8-speed dual-clutch |
| AWD | Drivetrain | FWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
BMW X3 Hybrid vs Mercedes-Benz GLB-Class Hybrid across model years
- BMW X3 Hybrid
- Mercedes-Benz GLB-Class Hybrid
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Among 133 2025 small SUVs, the BMW X3 Hybrid ranks 95th and the Mercedes-Benz GLB-Class Hybrid 102nd for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2025 BMW X3 Hybrid or the 2025 Mercedes-Benz GLB-Class Hybrid?
Measured by cost to drive, the BMW X3 Hybrid. The BMW X3 Hybrid is rated 29 MPG combined and the Mercedes-Benz GLB-Class Hybrid 28 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2025 BMW X3 Hybrid vs. the Mercedes-Benz GLB-Class Hybrid per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,043 for the BMW X3 Hybrid and $2,116 for the Mercedes-Benz GLB-Class Hybrid.
BMW X3 Hybrid vs Mercedes-Benz GLB-Class Hybrid in other years
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