2020 head-to-head · Large Car
2020 Mercedes-Benz S-Class Plug-in Hybrid vs Porsche Taycan
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
RWD · 3.0L 6-cyl turbo · 9-speed automatic · 64 MPGe + 23 MPG
The 2020 Porsche Taycan is the cheaper one to run. Driving 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, it costs about $1,315 a year to fuel (69 MPGe), versus $2,017 for the 2020 Mercedes-Benz S-Class Plug-in Hybrid (64 MPGe + 23 MPG). That's roughly $702 a year, or about $3,512 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 Plug-in Hybrid
- Porsche Taycan
Side by side
| Mercedes-Benz S-Class Plug-in Hybrid | Porsche Taycan | |
|---|---|---|
| $2,017 | Your annual fuel cost | $1,315 |
| 64 MPGe + 23 MPG | Combined efficiency | 69 MPGe |
| 58 MPGe / 21 MPG | City | 68 MPGe |
| 73 MPGe / 26 MPG | Highway | 71 MPGe |
| 53 kWh | Electricity use (kWh/100 mi) | 48.7 kWh |
| 510 mi | Driving range | 201 mi |
| 19 mi | All-electric range | — |
| 112 cu ft | Passenger volume | 108 cu ft |
| 9 cu ft | Cargo volume | 16 cu ft |
| 205 g/mi | Tailpipe CO₂ (g/mi) | 0 g/mi |
| 7/10 | EPA fuel economy score | 10/10 |
| 9/10 | EPA greenhouse gas score | 10/10 |
| 1.3 hrs | Charge time at 240V | 10 hrs |
| Plug-in hybrid | Powertrain | Electric |
| Premium gas + electricity | Fuel | Electricity |
| 3.0L 6-cyl turbo | Engine / motor | Electric motor (170 kW) |
| 9-speed automatic | Transmission | 2-speed automatic |
| RWD | 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 Plug-in Hybrid vs Porsche Taycan across model years
- Mercedes-Benz S-Class Plug-in Hybrid
- Porsche Taycan
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
The Mercedes-Benz S-Class Plug-in Hybrid goes farther between stops: about 510 miles on a full tank and charge, compared with 201 miles for the Porsche Taycan.
Per EPA interior volume figures, the Mercedes-Benz S-Class Plug-in Hybrid has more passenger space (112 vs. 108 cu ft); the Porsche Taycan has more cargo space (16 vs. 9 cu ft).
Among 32 2020 large cars, the Mercedes-Benz S-Class Plug-in Hybrid ranks 10th and the Porsche Taycan 5th for lowest fuel cost.
Because the Porsche Taycan is fully electric, it has no tailpipe emissions and its running cost depends almost entirely on your electricity rate. Cheap overnight home charging widens its advantage over the Mercedes-Benz S-Class Plug-in Hybrid; relying on DC fast chargers can erase it.
Frequently asked questions
Which is more fuel-efficient, the 2020 Mercedes-Benz S-Class Plug-in Hybrid or the 2020 Porsche Taycan?
Measured by cost to drive, the Porsche Taycan. The Mercedes-Benz S-Class Plug-in Hybrid is rated 64 MPGe + 23 MPG combined and the Porsche Taycan 69 MPGe (EPA, most efficient configuration of each).
How much does it cost to fuel the 2020 Mercedes-Benz S-Class Plug-in Hybrid vs. the Porsche Taycan per year?
At 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, about $2,017 for the Mercedes-Benz S-Class Plug-in Hybrid and $1,315 for the Porsche Taycan.
Which has more range?
The Mercedes-Benz S-Class Plug-in Hybrid: about 510 miles versus 201 miles.
Which has more cargo space?
The Porsche Taycan, with 16 cu ft of luggage volume versus 9 cu ft (EPA interior volume index).
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