2015 head-to-head · Midsize & Large SUV
2015 Mercedes-Benz G-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.
The 2015 Porsche Cayenne 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 $4,558 for the 2015 Mercedes-Benz G-Class (13 MPG). That's roughly $1,439 a year, or about $7,196 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
- Mercedes-Benz G-Class
- Porsche Cayenne
Side by side
| Mercedes-Benz G-Class | Porsche Cayenne | |
|---|---|---|
| $4,558 | Your annual fuel cost | $3,118 |
| 13 MPG | Combined efficiency | 19 MPG |
| 12 MPG | City | 16 MPG |
| 14 MPG | Highway | 24 MPG |
| 696 g/mi | Tailpipe CO₂ (g/mi) | 461 g/mi |
| 1/10 | EPA fuel economy score | 4/10 |
| 1/10 | EPA greenhouse gas score | 4/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 5.5L 8-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 G-Class vs Porsche Cayenne across model years
- Mercedes-Benz G-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 G-Class ranks 45th and the Porsche Cayenne 37th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2015 Mercedes-Benz G-Class or the 2015 Porsche Cayenne?
Measured by cost to drive, the Porsche Cayenne. The Mercedes-Benz G-Class is rated 13 MPG combined and the Porsche Cayenne 19 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 Mercedes-Benz G-Class vs. the Porsche Cayenne per year?
At 15,000 miles a year with $3.95/gal premium gas, about $4,558 for the Mercedes-Benz G-Class and $3,118 for the Porsche Cayenne.
Mercedes-Benz G-Class vs Porsche Cayenne in other years
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