2018 head-to-head · Large Car
2018 Audi A8 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.
The 2018 Porsche Panamera 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 $2,271 a year to fuel (46 MPGe + 22 MPG), versus $2,693 for the 2018 Audi A8 (22 MPG). That's roughly $422 a year, or about $2,112 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
- Audi A8
- Porsche Panamera Plug-in Hybrid
Side by side
| Audi A8 | Porsche Panamera Plug-in Hybrid | |
|---|---|---|
| $2,693 | Your annual fuel cost | $2,271 |
| 22 MPG | Combined efficiency | 46 MPGe + 22 MPG |
| 19 MPG | City | 40 MPGe / 20 MPG |
| 29 MPG | Highway | 57 MPGe / 25 MPG |
| — | Electricity use (kWh/100 mi) | 59 kWh |
| — | Driving range | 480 mi |
| — | All-electric range | 16 mi |
| 107 cu ft | Passenger volume | 108 cu ft |
| 15 cu ft | Cargo volume | 16 cu ft |
| 397 g/mi | Tailpipe CO₂ (g/mi) | 260 g/mi |
| 4/10 | EPA fuel economy score | 6/10 |
| 4/10 | EPA greenhouse gas score | 8/10 |
| — | Charge time at 240V | 3 hrs |
| Gas | Powertrain | Plug-in hybrid |
| Premium gasoline | Fuel | Premium gas + electricity |
| 3.0L 6-cyl supercharged | 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 vs Porsche Panamera Plug-in Hybrid across model years
- Audi A8
- 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
Per EPA interior volume figures, the Porsche Panamera Plug-in Hybrid has more cargo space (16 vs. 15 cu ft).
Among 31 2018 large cars, the Audi A8 ranks 26th and the Porsche Panamera Plug-in Hybrid 20th for lowest fuel cost.
The powertrains differ: the Audi A8 is a conventional gas model, while the Porsche Panamera Plug-in Hybrid is a plug-in hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2018 Audi A8 or the 2018 Porsche Panamera Plug-in Hybrid?
Measured by cost to drive, the Porsche Panamera Plug-in Hybrid. The Audi A8 is rated 22 MPG combined and the Porsche Panamera Plug-in Hybrid 46 MPGe + 22 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Audi A8 vs. the Porsche Panamera Plug-in Hybrid per year?
At 15,000 miles a year with $3.95/gal premium gas and 18¢/kWh electricity, about $2,693 for the Audi A8 and $2,271 for the Porsche Panamera Plug-in Hybrid.
Which has more cargo space?
The Porsche Panamera Plug-in Hybrid, with 16 cu ft of luggage volume versus 15 cu ft (EPA interior volume index).
More 2018 comparisons
Audi A8 vs…
Or compare the 2018 Audi A8 with anything else: