2019 head-to-head · Midsize & Large SUV
2019 Audi Q8 vs Mercedes-Benz GLS-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.
AWD · 3.0L 6-cyl turbo · 8-speed automatic · 19 MPG
The 2019 Audi Q8 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $3,118 a year to fuel (19 MPG), versus $3,292 for the 2019 Mercedes-Benz GLS-Class (18 MPG). That's roughly $173 a year, or about $866 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
- Audi Q8
- Mercedes-Benz GLS-Class
Side by side
| Audi Q8 | Mercedes-Benz GLS-Class | |
|---|---|---|
| $3,118 | Your annual fuel cost | $3,292 |
| 19 MPG | Combined efficiency | 18 MPG |
| 17 MPG | City | 16 MPG |
| 22 MPG | Highway | 22 MPG |
| 474 g/mi | Tailpipe CO₂ (g/mi) | 488 g/mi |
| 3/10 | EPA fuel economy score | 3/10 |
| 3/10 | EPA greenhouse gas score | 3/10 |
| Hybrid | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 3.0L 6-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 8-speed automatic | Transmission | 9-speed automatic |
| AWD | Drivetrain | 4WD |
✓ 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.
Audi Q8 vs Mercedes-Benz GLS-Class across model years
- Audi Q8
- Mercedes-Benz GLS-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 46 2019 midsize & large SUVs, the Audi Q8 ranks 37th and the Mercedes-Benz GLS-Class 38th for lowest fuel cost.
The powertrains differ: the Audi Q8 is a full hybrid, while the Mercedes-Benz GLS-Class is a conventional gas model.
Frequently asked questions
Which is more fuel-efficient, the 2019 Audi Q8 or the 2019 Mercedes-Benz GLS-Class?
Measured by cost to drive, the Audi Q8. The Audi Q8 is rated 19 MPG combined and the Mercedes-Benz GLS-Class 18 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2019 Audi Q8 vs. the Mercedes-Benz GLS-Class per year?
At 15,000 miles a year with $3.95/gal premium gas, about $3,118 for the Audi Q8 and $3,292 for the Mercedes-Benz GLS-Class.
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