2021 head-to-head · Large Car
2021 Audi S8 Hybrid vs BMW 7 Series 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 · 4.0L 8-cyl turbo · 8-speed automatic · 16 MPG
AWD · 3.0L 6-cyl turbo · 8-speed automatic · 56 MPGe + 22 MPG
The 2021 BMW 7 Series 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 $2,264 a year to fuel (56 MPGe + 22 MPG), versus $3,703 for the 2021 Audi S8 Hybrid (16 MPG). That's roughly $1,439 a year, or about $7,196 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 S8 Hybrid
- BMW 7 Series Plug-in Hybrid
Side by side
| Audi S8 Hybrid | BMW 7 Series Plug-in Hybrid | |
|---|---|---|
| $3,703 | Your annual fuel cost | $2,264 |
| 16 MPG | Combined efficiency | 56 MPGe + 22 MPG |
| 13 MPG | City | 52 MPGe / 19 MPG |
| 22 MPG | Highway | 61 MPGe / 26 MPG |
| — | Electricity use (kWh/100 mi) | 60 kWh |
| — | Driving range | 290 mi |
| — | All-electric range | 17 mi |
| 111 cu ft | Passenger volume | 114 cu ft |
| 13 cu ft | Cargo volume | 10 cu ft |
| 545 g/mi | Tailpipe CO₂ (g/mi) | 245 g/mi |
| 2/10 | EPA fuel economy score | 6/10 |
| 2/10 | EPA greenhouse gas score | 8/10 |
| — | Charge time at 240V | 4 hrs |
| Hybrid | Powertrain | Plug-in hybrid |
| Premium gasoline | Fuel | Premium gas + electricity |
| 4.0L 8-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 8-speed automatic | Transmission | 8-speed automatic |
| 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 S8 Hybrid vs BMW 7 Series Plug-in Hybrid across model years
- Audi S8 Hybrid
- BMW 7 Series 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 Audi S8 Hybrid has more cargo space (13 vs. 10 cu ft).
Among 27 2021 large cars, the Audi S8 Hybrid ranks 25th and the BMW 7 Series Plug-in Hybrid 15th for lowest fuel cost.
The powertrains differ: the Audi S8 Hybrid is a full hybrid, while the BMW 7 Series Plug-in Hybrid is a plug-in hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2021 Audi S8 Hybrid or the 2021 BMW 7 Series Plug-in Hybrid?
Measured by cost to drive, the BMW 7 Series Plug-in Hybrid. The Audi S8 Hybrid is rated 16 MPG combined and the BMW 7 Series Plug-in Hybrid 56 MPGe + 22 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2021 Audi S8 Hybrid vs. the BMW 7 Series Plug-in Hybrid per year?
At 15,000 miles a year with $3.95/gal premium gas and 18¢/kWh electricity, about $3,703 for the Audi S8 Hybrid and $2,264 for the BMW 7 Series Plug-in Hybrid.
Which has more cargo space?
The Audi S8 Hybrid, with 13 cu ft of luggage volume versus 10 cu ft (EPA interior volume index).
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