2023 head-to-head · Midsize & Large SUV
2023 Mercedes-Benz GLS-Class Hybrid vs Porsche Cayenne Plug-in Hybrid
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 · 4.0L 8-cyl turbo · 8-speed automatic · 42 MPGe + 18 MPG
The 2023 Porsche Cayenne Plug-in Hybrid is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas and 18¢/kWh electricity, it costs about $2,897 a year to fuel (42 MPGe + 18 MPG), versus $2,962 for the 2023 Mercedes-Benz GLS-Class Hybrid (20 MPG). That's roughly $65 a year, or about $326 over five years.
Your numbers
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Fuel cost over 10 years
- Mercedes-Benz GLS-Class Hybrid
- Porsche Cayenne Plug-in Hybrid
Side by side
| Mercedes-Benz GLS-Class Hybrid | Porsche Cayenne Plug-in Hybrid | |
|---|---|---|
| $2,962 | Your annual fuel cost | $2,897 |
| 20 MPG | Combined efficiency | 42 MPGe + 18 MPG |
| 18 MPG | City | 40 MPGe / 17 MPG |
| 23 MPG | Highway | 44 MPGe / 20 MPG |
| — | Electricity use (kWh/100 mi) | 82 kWh |
| — | Driving range | 370 mi |
| — | All-electric range | 15 mi |
| 433 g/mi | Tailpipe CO₂ (g/mi) | 320 g/mi |
| 4/10 | EPA fuel economy score | 5/10 |
| 4/10 | EPA greenhouse gas score | 6/10 |
| — | Charge time at 240V | 3 hrs |
| Hybrid | Powertrain | Plug-in hybrid |
| Premium gasoline | Fuel | Premium gas + electricity |
| 3.0L 6-cyl turbo | Engine / motor | 4.0L 8-cyl turbo |
| 9-speed automatic | Transmission | 8-speed automatic |
| AWD | 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 GLS-Class Hybrid vs Porsche Cayenne Plug-in Hybrid across model years
- Mercedes-Benz GLS-Class Hybrid
- Porsche Cayenne Plug-in Hybrid
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 73 2023 midsize & large SUVs, the Mercedes-Benz GLS-Class Hybrid ranks 53rd and the Porsche Cayenne Plug-in Hybrid 49th for lowest fuel cost.
The powertrains differ: the Mercedes-Benz GLS-Class Hybrid is a full hybrid, while the Porsche Cayenne Plug-in Hybrid is a plug-in hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2023 Mercedes-Benz GLS-Class Hybrid or the 2023 Porsche Cayenne Plug-in Hybrid?
Measured by cost to drive, the Porsche Cayenne Plug-in Hybrid. The Mercedes-Benz GLS-Class Hybrid is rated 20 MPG combined and the Porsche Cayenne Plug-in Hybrid 42 MPGe + 18 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2023 Mercedes-Benz GLS-Class Hybrid vs. the Porsche Cayenne Plug-in Hybrid per year?
At 15,000 miles a year with $3.95/gal premium gas and 18¢/kWh electricity, about $2,962 for the Mercedes-Benz GLS-Class Hybrid and $2,897 for the Porsche Cayenne Plug-in Hybrid.
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