2018 head-to-head · Small SUV
2018 BMW X3 vs Mercedes-Benz GLA-Class
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 2018 Mercedes-Benz GLA-Class is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,194 a year to fuel (27 MPG), versus $2,370 for the 2018 BMW X3 (25 MPG). That's roughly $176 a year, or about $878 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
- Mercedes-Benz GLA-Class
Side by side
| BMW X3 | Mercedes-Benz GLA-Class | |
|---|---|---|
| $2,370 | Your annual fuel cost | $2,194 |
| 25 MPG | Combined efficiency | 27 MPG |
| 22 MPG | City | 24 MPG |
| 29 MPG | Highway | 33 MPG |
| — | Passenger volume | 91 cu ft |
| — | Cargo volume | 42 cu ft |
| 359 g/mi | Tailpipe CO₂ (g/mi) | 322 g/mi |
| 5/10 | EPA fuel economy score | 6/10 |
| 5/10 | EPA greenhouse gas score | 6/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 2.0L 4-cyl turbo |
| 8-speed automatic | Transmission | 7-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 vs Mercedes-Benz GLA-Class across model years
- BMW X3
- Mercedes-Benz GLA-Class
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 68 2018 small SUVs, the BMW X3 ranks 53rd and the Mercedes-Benz GLA-Class 49th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2018 BMW X3 or the 2018 Mercedes-Benz GLA-Class?
Measured by cost to drive, the Mercedes-Benz GLA-Class. The BMW X3 is rated 25 MPG combined and the Mercedes-Benz GLA-Class 27 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 BMW X3 vs. the Mercedes-Benz GLA-Class per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,370 for the BMW X3 and $2,194 for the Mercedes-Benz GLA-Class.
BMW X3 vs Mercedes-Benz GLA-Class in other years
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