2025 head-to-head · Large Car
2025 Mercedes-Benz S-Class Hybrid vs Porsche Panamera 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.
The 2025 Porsche Panamera 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 $2,174 a year to fuel (55 MPGe + 21 MPG), versus $2,469 for the 2025 Mercedes-Benz S-Class Hybrid (24 MPG). That's roughly $294 a year, or about $1,472 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 S-Class Hybrid
- Porsche Panamera Plug-in Hybrid
Side by side
| Mercedes-Benz S-Class Hybrid | Porsche Panamera Plug-in Hybrid | |
|---|---|---|
| $2,469 | Your annual fuel cost | $2,174 |
| 24 MPG | Combined efficiency | 55 MPGe + 21 MPG |
| 21 MPG | City | 51 MPGe / 21 MPG |
| 31 MPG | Highway | 60 MPGe / 24 MPG |
| — | Electricity use (kWh/100 mi) | 62 kWh |
| — | Driving range | 490 mi |
| — | All-electric range | 28 mi |
| 112 cu ft | Passenger volume | 98 cu ft |
| 13 cu ft | Cargo volume | 27 cu ft |
| 364 g/mi | Tailpipe CO₂ (g/mi) | 185 g/mi |
| 5/10 | EPA fuel economy score | 6/10 |
| 5/10 | EPA greenhouse gas score | 8/10 |
| — | Charge time at 240V | 2.5 hrs |
| Hybrid | Powertrain | Plug-in hybrid |
| Premium gasoline | Fuel | Premium gas + electricity |
| 3.0L 6-cyl turbo | Engine / motor | 2.9L 8-cyl turbo |
| 9-speed automatic | Transmission | 8-speed dual-clutch |
| 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 S-Class Hybrid vs Porsche Panamera Plug-in Hybrid across model years
- Mercedes-Benz S-Class Hybrid
- Porsche Panamera 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
Per EPA interior volume figures, the Mercedes-Benz S-Class Hybrid has more passenger space (112 vs. 98 cu ft); the Porsche Panamera Plug-in Hybrid has more cargo space (27 vs. 13 cu ft).
Among 25 2025 large cars, the Mercedes-Benz S-Class Hybrid ranks 16th and the Porsche Panamera Plug-in Hybrid 15th for lowest fuel cost.
The powertrains differ: the Mercedes-Benz S-Class Hybrid is a full hybrid, while the Porsche Panamera Plug-in Hybrid is a plug-in hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2025 Mercedes-Benz S-Class Hybrid or the 2025 Porsche Panamera Plug-in Hybrid?
Measured by cost to drive, the Porsche Panamera Plug-in Hybrid. The Mercedes-Benz S-Class Hybrid is rated 24 MPG combined and the Porsche Panamera Plug-in Hybrid 55 MPGe + 21 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2025 Mercedes-Benz S-Class Hybrid vs. the Porsche Panamera Plug-in Hybrid per year?
At 15,000 miles a year with $3.95/gal premium gas and 18¢/kWh electricity, about $2,469 for the Mercedes-Benz S-Class Hybrid and $2,174 for the Porsche Panamera Plug-in Hybrid.
Which has more cargo space?
The Porsche Panamera Plug-in Hybrid, with 27 cu ft of luggage volume versus 13 cu ft (EPA interior volume index).
Mercedes-Benz S-Class Hybrid vs Porsche Panamera Plug-in Hybrid in other years
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