2017 head-to-head · Large Car
2017 BMW 7 Series vs Mercedes-Benz S-Class 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.
RWD · 3.0L 6-cyl turbo · 7-speed automatic · 58 MPGe + 26 MPG
The 2017 Mercedes-Benz S-Class 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 $2,037 a year to fuel (58 MPGe + 26 MPG), versus $2,469 for the 2017 BMW 7 Series (24 MPG). That's roughly $431 a year, or about $2,157 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
- BMW 7 Series
- Mercedes-Benz S-Class Plug-in Hybrid
Side by side
| BMW 7 Series | Mercedes-Benz S-Class Plug-in Hybrid | |
|---|---|---|
| $2,469 | Your annual fuel cost | $2,037 |
| 24 MPG | Combined efficiency | 58 MPGe + 26 MPG |
| 21 MPG | City | 54 MPGe / 24 MPG |
| 29 MPG | Highway | 63 MPGe / 30 MPG |
| — | Electricity use (kWh/100 mi) | 59 kWh |
| — | Driving range | 450 mi |
| — | All-electric range | 14 mi |
| 114 cu ft | Passenger volume | 112 cu ft |
| 14 cu ft | Cargo volume | 9 cu ft |
| 372 g/mi | Tailpipe CO₂ (g/mi) | 229 g/mi |
| 5/10 | EPA fuel economy score | 7/10 |
| 5/10 | EPA greenhouse gas score | 9/10 |
| — | Charge time at 240V | 1.9 hrs |
| Gas | Powertrain | Plug-in hybrid |
| Premium gasoline | Fuel | Premium gas + electricity |
| 3.0L 6-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 8-speed automatic | Transmission | 7-speed automatic |
| 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.
BMW 7 Series vs Mercedes-Benz S-Class Plug-in Hybrid across model years
- BMW 7 Series
- Mercedes-Benz S-Class 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 BMW 7 Series has more cargo space (14 vs. 9 cu ft).
Among 30 2017 large cars, the BMW 7 Series ranks 21st and the Mercedes-Benz S-Class Plug-in Hybrid 14th for lowest fuel cost.
The powertrains differ: the BMW 7 Series is a conventional gas model, while the Mercedes-Benz S-Class Plug-in Hybrid is a plug-in hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2017 BMW 7 Series or the 2017 Mercedes-Benz S-Class Plug-in Hybrid?
Measured by cost to drive, the Mercedes-Benz S-Class Plug-in Hybrid. The BMW 7 Series is rated 24 MPG combined and the Mercedes-Benz S-Class Plug-in Hybrid 58 MPGe + 26 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2017 BMW 7 Series vs. the Mercedes-Benz S-Class 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 BMW 7 Series and $2,037 for the Mercedes-Benz S-Class Plug-in Hybrid.
Which has more cargo space?
The BMW 7 Series, with 14 cu ft of luggage volume versus 9 cu ft (EPA interior volume index).
BMW 7 Series vs Mercedes-Benz S-Class Plug-in Hybrid in other years
More 2017 comparisons
BMW 7 Series vs…
Mercedes-Benz S-Class Plug-in Hybrid vs…
Or compare the 2017 BMW 7 Series with anything else: