2021 head-to-head · Large Car
2021 Audi A8 Plug-in 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.
AWD · 3.0L 6-cyl turbo · 8-speed automatic · 53 MPGe + 23 MPG
The 2021 Audi A8 Plug-in Hybrid 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 $2,170 a year to fuel (53 MPGe + 23 MPG), versus $2,274 for the 2021 Porsche Panamera Plug-in Hybrid (52 MPGe + 22 MPG). That's roughly $104 a year, or about $521 over five years.
Your numbers
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Fuel cost over 10 years
- Audi A8 Plug-in Hybrid
- Porsche Panamera Plug-in Hybrid
Side by side
| Audi A8 Plug-in Hybrid | Porsche Panamera Plug-in Hybrid | |
|---|---|---|
| $2,170 | Your annual fuel cost | $2,274 |
| 53 MPGe + 23 MPG | Combined efficiency | 52 MPGe + 22 MPG |
| 49 MPGe / 21 MPG | City | 50 MPGe / 21 MPG |
| 60 MPGe / 26 MPG | Highway | 54 MPGe / 24 MPG |
| 63 kWh | Electricity use (kWh/100 mi) | 64 kWh |
| 420 mi | Driving range | 480 mi |
| 18 mi | All-electric range | 19 mi |
| 111 cu ft | Passenger volume | 98 cu ft |
| 13 cu ft | Cargo volume | 27 cu ft |
| 213 g/mi | Tailpipe CO₂ (g/mi) | 232 g/mi |
| 7/10 | EPA fuel economy score | 6/10 |
| 8/10 | EPA greenhouse gas score | 8/10 |
| 2.4 hrs | Charge time at 240V | 3 hrs |
| Plug-in hybrid | Powertrain | Plug-in hybrid |
| Premium gas + electricity | Fuel | Premium gas + electricity |
| 3.0L 6-cyl turbo | Engine / motor | 2.9L 6-cyl turbo |
| 8-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.
Audi A8 Plug-in Hybrid vs Porsche Panamera Plug-in Hybrid across model years
- Audi A8 Plug-in 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
The Porsche Panamera Plug-in Hybrid goes farther between stops: about 480 miles on a full tank and charge, compared with 420 miles for the Audi A8 Plug-in Hybrid.
Per EPA interior volume figures, the Audi A8 Plug-in Hybrid has more passenger space (111 vs. 98 cu ft); the Porsche Panamera Plug-in Hybrid has more cargo space (27 vs. 13 cu ft).
Among 27 2021 large cars, the Audi A8 Plug-in Hybrid ranks 13th and the Porsche Panamera Plug-in Hybrid 16th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2021 Audi A8 Plug-in Hybrid or the 2021 Porsche Panamera Plug-in Hybrid?
Measured by cost to drive, the Audi A8 Plug-in Hybrid. The Audi A8 Plug-in Hybrid is rated 53 MPGe + 23 MPG combined and the Porsche Panamera Plug-in Hybrid 52 MPGe + 22 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2021 Audi A8 Plug-in Hybrid vs. the Porsche Panamera Plug-in Hybrid per year?
At 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, about $2,170 for the Audi A8 Plug-in Hybrid and $2,274 for the Porsche Panamera Plug-in Hybrid.
Which has more range?
The Porsche Panamera Plug-in Hybrid: about 480 miles versus 420 miles.
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).
Audi A8 Plug-in Hybrid vs Porsche Panamera Plug-in Hybrid in other years
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