2021 head-to-head · Large Car
2021 BMW 7 Series 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.
AWD · 3.0L 6-cyl turbo · 8-speed automatic · 56 MPGe + 22 MPG
The 2021 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 $1,107 a year to fuel (79 MPGe), versus $2,264 for the 2021 BMW 7 Series Plug-in Hybrid (56 MPGe + 22 MPG). That's roughly $1,157 a year, or about $5,785 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 Plug-in Hybrid
- Porsche Taycan
Side by side
| BMW 7 Series Plug-in Hybrid | Porsche Taycan | |
|---|---|---|
| $2,264 | Your annual fuel cost | $1,107 |
| 56 MPGe + 22 MPG | Combined efficiency | 79 MPGe |
| 52 MPGe / 19 MPG | City | 76 MPGe |
| 61 MPGe / 26 MPG | Highway | 84 MPGe |
| 60 kWh | Electricity use (kWh/100 mi) | 41 kWh |
| 290 mi | Driving range | 200 mi |
| 17 mi | All-electric range | — |
| 114 cu ft | Passenger volume | 88 cu ft |
| 10 cu ft | Cargo volume | 12 cu ft |
| 245 g/mi | Tailpipe CO₂ (g/mi) | 0 g/mi |
| 6/10 | EPA fuel economy score | 10/10 |
| 8/10 | EPA greenhouse gas score | 10/10 |
| 4 hrs | Charge time at 240V | 9.5 hrs |
| Plug-in hybrid | Powertrain | Electric |
| Premium gas + electricity | Fuel | Electricity |
| 3.0L 6-cyl turbo | Engine / motor | Electric motor (240 kW) |
| 8-speed automatic | Transmission | 2-speed automatic |
| AWD | 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 Plug-in Hybrid vs Porsche Taycan across model years
- BMW 7 Series 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 BMW 7 Series Plug-in Hybrid goes farther between stops: about 290 miles on a full tank and charge, compared with 200 miles for the Porsche Taycan.
Per EPA interior volume figures, the BMW 7 Series Plug-in Hybrid has more passenger space (114 vs. 88 cu ft); the Porsche Taycan has more cargo space (12 vs. 10 cu ft).
Among 27 2021 large cars, the BMW 7 Series Plug-in Hybrid ranks 15th 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 BMW 7 Series Plug-in Hybrid; relying on DC fast chargers can erase it.
Frequently asked questions
Which is more fuel-efficient, the 2021 BMW 7 Series Plug-in Hybrid or the 2021 Porsche Taycan?
Measured by cost to drive, the Porsche Taycan. The BMW 7 Series Plug-in Hybrid is rated 56 MPGe + 22 MPG combined and the Porsche Taycan 79 MPGe (EPA, most efficient configuration of each).
How much does it cost to fuel the 2021 BMW 7 Series 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 $2,264 for the BMW 7 Series Plug-in Hybrid and $1,107 for the Porsche Taycan.
Which has more range?
The BMW 7 Series Plug-in Hybrid: about 290 miles versus 200 miles.
Which has more cargo space?
The Porsche Taycan, with 12 cu ft of luggage volume versus 10 cu ft (EPA interior volume index).
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