2026 head-to-head · Midsize & Large SUV
2026 Mercedes-Benz G-Class Hybrid 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 2026 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 $3,292 for the 2026 Mercedes-Benz G-Class Hybrid (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
- Mercedes-Benz G-Class Hybrid
- Porsche Cayenne
Side by side
| Mercedes-Benz G-Class Hybrid | Porsche Cayenne | |
|---|---|---|
| $3,292 | Your annual fuel cost | $3,118 |
| 18 MPG | Combined efficiency | 19 MPG |
| 17 MPG | City | 17 MPG |
| 19 MPG | Highway | 23 MPG |
| 490 g/mi | Tailpipe CO₂ (g/mi) | 469 g/mi |
| 3/10 | EPA fuel economy score | 4/10 |
| 3/10 | EPA greenhouse gas score | 4/10 |
| Hybrid | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 3.0L 6-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 9-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 Hybrid vs Porsche Cayenne across model years
- Mercedes-Benz G-Class Hybrid
- 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 91 2026 midsize & large SUVs, the Mercedes-Benz G-Class Hybrid ranks 80th and the Porsche Cayenne 77th for lowest fuel cost.
The powertrains differ: the Mercedes-Benz G-Class Hybrid is a full hybrid, while the Porsche Cayenne is a conventional gas model.
Frequently asked questions
Which is more fuel-efficient, the 2026 Mercedes-Benz G-Class Hybrid or the 2026 Porsche Cayenne?
Measured by cost to drive, the Porsche Cayenne. The Mercedes-Benz G-Class Hybrid is rated 18 MPG combined and the Porsche Cayenne 19 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2026 Mercedes-Benz G-Class Hybrid vs. the Porsche Cayenne per year?
At 15,000 miles a year with $3.95/gal premium gas, about $3,292 for the Mercedes-Benz G-Class Hybrid and $3,118 for the Porsche Cayenne.
Mercedes-Benz G-Class Hybrid vs Porsche Cayenne in other years
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