2015 head-to-head · Large Car
2015 Audi A8 Diesel 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 · 28 MPG
RWD · 3.0L 6-cyl supercharged · 8-speed dual-clutch · 50 MPGe + 25 MPG
On fuel costs these two are nearly tied. Driving 15,000 miles a year with $3.70/gal diesel fuel, 18¢/kWh electricity and $3.95/gal premium gas, the most efficient 2015 Audi A8 Diesel (28 MPG) costs about $1,982 a year to fuel and the 2015 Porsche Panamera Plug-in Hybrid (50 MPGe + 25 MPG) about $1,996.
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 Diesel
- Porsche Panamera Plug-in Hybrid
Side by side
| Audi A8 Diesel | Porsche Panamera Plug-in Hybrid | |
|---|---|---|
| $1,982 | Your annual fuel cost | $1,996 |
| 28 MPG | Combined efficiency | 50 MPGe + 25 MPG |
| 24 MPG | City | 42 MPGe / 23 MPG |
| 36 MPG | Highway | 66 MPGe / 29 MPG |
| — | Electricity use (kWh/100 mi) | 52 kWh |
| — | Driving range | 540 mi |
| — | All-electric range | 16 mi |
| 107 cu ft | Passenger volume | 108 cu ft |
| 15 cu ft | Cargo volume | 16 cu ft |
| 360 g/mi | Tailpipe CO₂ (g/mi) | 229 g/mi |
| 7/10 | EPA fuel economy score | 8/10 |
| 6/10 | EPA greenhouse gas score | 9/10 |
| — | Charge time at 240V | 3 hrs |
| Diesel | Powertrain | Plug-in hybrid |
| Diesel | Fuel | Premium gas + electricity |
| 3.0L 6-cyl turbo | Engine / motor | 3.0L 6-cyl supercharged |
| 8-speed automatic | Transmission | 8-speed dual-clutch |
| 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.
Audi A8 Diesel vs Porsche Panamera Plug-in Hybrid across model years
- Audi A8 Diesel
- 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 29 2015 large cars, the Audi A8 Diesel ranks 6th and the Porsche Panamera Plug-in Hybrid 7th for lowest fuel cost.
The powertrains differ: the Audi A8 Diesel is a diesel, while the Porsche Panamera Plug-in Hybrid is a plug-in hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2015 Audi A8 Diesel or the 2015 Porsche Panamera Plug-in Hybrid?
Measured by cost to drive, the Audi A8 Diesel. The Audi A8 Diesel is rated 28 MPG combined and the Porsche Panamera Plug-in Hybrid 50 MPGe + 25 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 Audi A8 Diesel vs. the Porsche Panamera Plug-in Hybrid per year?
At 15,000 miles a year with $3.70/gal diesel fuel, 18¢/kWh electricity and $3.95/gal premium gas, about $1,982 for the Audi A8 Diesel and $1,996 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).
Audi A8 Diesel vs Porsche Panamera Plug-in Hybrid in other years
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