2018 head-to-head · Large Car
2018 Mercedes-Benz S-Class vs Porsche Panamera
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 2018 Porsche Panamera is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,469 a year to fuel (24 MPG), versus $2,693 for the 2018 Mercedes-Benz S-Class (22 MPG). That's roughly $224 a year, or about $1,122 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
- Porsche Panamera
Side by side
| Mercedes-Benz S-Class | Porsche Panamera | |
|---|---|---|
| $2,693 | Your annual fuel cost | $2,469 |
| 22 MPG | Combined efficiency | 24 MPG |
| 19 MPG | City | 21 MPG |
| 28 MPG | Highway | 28 MPG |
| 112 cu ft | Passenger volume | 108 cu ft |
| 12 cu ft | Cargo volume | 16 cu ft |
| 403 g/mi | Tailpipe CO₂ (g/mi) | 369 g/mi |
| 4/10 | EPA fuel economy score | 5/10 |
| 4/10 | EPA greenhouse gas score | 5/10 |
| Gas | 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 dual-clutch |
| RWD | Drivetrain | RWD |
✓ 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 vs Porsche Panamera across model years
- Mercedes-Benz S-Class
- Porsche Panamera
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 has more passenger space (112 vs. 108 cu ft); the Porsche Panamera has more cargo space (16 vs. 12 cu ft).
Among 31 2018 large cars, the Mercedes-Benz S-Class ranks 25th and the Porsche Panamera 24th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2018 Mercedes-Benz S-Class or the 2018 Porsche Panamera?
Measured by cost to drive, the Porsche Panamera. The Mercedes-Benz S-Class is rated 22 MPG combined and the Porsche Panamera 24 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Mercedes-Benz S-Class vs. the Porsche Panamera per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,693 for the Mercedes-Benz S-Class and $2,469 for the Porsche Panamera.
Which has more cargo space?
The Porsche Panamera, with 16 cu ft of luggage volume versus 12 cu ft (EPA interior volume index).
Mercedes-Benz S-Class vs Porsche Panamera in other years
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