2015 head-to-head · Midsize & Large SUV
2015 Mercedes-Benz GL-Class vs Porsche Cayenne
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
On fuel costs these two are nearly tied. Driving 15,000 miles a year with $3.95/gal premium gas, the most efficient 2015 Mercedes-Benz GL-Class (19 MPG) costs about $3,118 a year to fuel and the 2015 Porsche Cayenne (19 MPG) about $3,118.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Mercedes-Benz GL-Class
- Porsche Cayenne
Side by side
| Mercedes-Benz GL-Class | Porsche Cayenne | |
|---|---|---|
| $3,118 | Your annual fuel cost | $3,118 |
| 19 MPG | Combined efficiency | 19 MPG |
| 17 MPG | City | 16 MPG |
| 21 MPG | Highway | 24 MPG |
| 479 g/mi | Tailpipe CO₂ (g/mi) | 461 g/mi |
| 4/10 | EPA fuel economy score | 4/10 |
| 4/10 | EPA greenhouse gas score | 4/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 3.0L 6-cyl turbo | Engine / motor | 3.6L 6-cyl turbo |
| 7-speed automatic | Transmission | 8-speed automatic |
| 4WD | 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.
Mercedes-Benz GL-Class vs Porsche Cayenne across model years
- Mercedes-Benz GL-Class
- Porsche Cayenne
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 45 2015 midsize & large SUVs, the Mercedes-Benz GL-Class ranks 39th and the Porsche Cayenne 37th for lowest fuel cost.
Frequently asked questions
How much does it cost to fuel the 2015 Mercedes-Benz GL-Class vs. the Porsche Cayenne per year?
At 15,000 miles a year with $3.95/gal premium gas, about $3,118 for the Mercedes-Benz GL-Class and $3,118 for the Porsche Cayenne.
Mercedes-Benz GL-Class vs Porsche Cayenne in other years
More 2015 comparisons
Mercedes-Benz GL-Class vs…
Or compare the 2015 Mercedes-Benz GL-Class with anything else: