2025 head-to-head · Midsize & Large SUV
2025 BMW XM vs Mercedes-Benz GLS-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.
AWD · 4.4L 8-cyl turbo · 8-speed automatic · 46 MPGe + 14 MPG
On fuel costs these two are nearly tied. Driving 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, the most efficient 2025 BMW XM (46 MPGe + 14 MPG) costs about $2,878 a year to fuel and the 2025 Mercedes-Benz GLS-Class Hybrid (21 MPG) about $2,821.
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 XM
- Mercedes-Benz GLS-Class Hybrid
Side by side
| BMW XM | Mercedes-Benz GLS-Class Hybrid | |
|---|---|---|
| $2,878 | Your annual fuel cost | $2,821 |
| 46 MPGe + 14 MPG | Combined efficiency | 21 MPG |
| 46 MPGe / 12 MPG | City | 19 MPG |
| 46 MPGe / 17 MPG | Highway | 24 MPG |
| 73 kWh | Electricity use (kWh/100 mi) | — |
| 300 mi | Driving range | — |
| 31 mi | All-electric range | — |
| 244 g/mi | Tailpipe CO₂ (g/mi) | 428 g/mi |
| 5/10 | EPA fuel economy score | 4/10 |
| 7/10 | EPA greenhouse gas score | 4/10 |
| 5 hrs | Charge time at 240V | — |
| Plug-in hybrid | Powertrain | Hybrid |
| Premium gas + electricity | Fuel | Premium gasoline |
| 4.4L 8-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 8-speed automatic | Transmission | 9-speed automatic |
| AWD | Drivetrain | AWD |
✓ 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 XM vs Mercedes-Benz GLS-Class Hybrid across model years
- BMW XM
- Mercedes-Benz GLS-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 94 2025 midsize & large SUVs, the BMW XM ranks 71st and the Mercedes-Benz GLS-Class Hybrid 69th for lowest fuel cost.
The powertrains differ: the BMW XM is a plug-in hybrid, while the Mercedes-Benz GLS-Class Hybrid is a full hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2025 BMW XM or the 2025 Mercedes-Benz GLS-Class Hybrid?
Measured by cost to drive, the Mercedes-Benz GLS-Class Hybrid. The BMW XM is rated 46 MPGe + 14 MPG combined and the Mercedes-Benz GLS-Class Hybrid 21 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2025 BMW XM vs. the Mercedes-Benz GLS-Class Hybrid per year?
At 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, about $2,878 for the BMW XM and $2,821 for the Mercedes-Benz GLS-Class Hybrid.
BMW XM vs Mercedes-Benz GLS-Class Hybrid in other years
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